diff --git a/BRANCHES.md b/BRANCHES.md
index b671e4c0..aa1106ef 100644
--- a/BRANCHES.md
+++ b/BRANCHES.md
@@ -4,7 +4,7 @@ Installing from branches
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/CERTIFICATES.md b/CERTIFICATES.md
index 37e138ce..89d2929e 100644
--- a/CERTIFICATES.md
+++ b/CERTIFICATES.md
@@ -4,7 +4,7 @@ Certificate name from browser
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/CONTRIBUTIONS.md b/CONTRIBUTIONS.md
index 1bce0fa1..d2472771 100644
--- a/CONTRIBUTIONS.md
+++ b/CONTRIBUTIONS.md
@@ -4,7 +4,7 @@ Past Contributions
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/DEBUG.md b/DEBUG.md
index 38f82a11..613898b0 100644
--- a/DEBUG.md
+++ b/DEBUG.md
@@ -4,7 +4,7 @@ Debug output and logs
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/INITIAL-COMMANDS.md b/INITIAL-COMMANDS.md
index df64aa7e..31c58555 100644
--- a/INITIAL-COMMANDS.md
+++ b/INITIAL-COMMANDS.md
@@ -4,7 +4,7 @@ Initial commands
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -18,13 +18,12 @@ Run the complete base installation:
 
     {
       :local BaseUrl "https://rsc.eworm.de/main/";
-      :local CertCommonName "ISRG Root X2";
-      :local CertFileName "ISRG-Root-X2.pem";
-      :local CertFingerprint "69729b8e15a86efc177a57afb7171dfc64add28c2fca8cf1507e34453ccb1470";
+      :local CertCommonName "Root YE";
+      :local CertFileName "Root-YE.pem";
+      :local CertFingerprint "e14ffcad5b0025731006caa43a121a22d8e9700f4fb9cf852f02a708aa5d5666";
 
       :local CertSettings [ /certificate/settings/get ];
-      :if (!((($CertSettings->"builtin-trust-anchors") = "trusted" || \
-              ($CertSettings->"builtin-trust-store") ~ "fetch" || \
+      :if (!((($CertSettings->"builtin-trust-store") ~ "fetch" || \
               ($CertSettings->"builtin-trust-store") = "all") && \
              [ :len [ /certificate/builtin/find where common-name=$CertCommonName ] ] > 0)) do={
         :put "Importing certificate...";
diff --git a/README.d/01-download-certs.avif b/README.d/01-download-certs.avif
index f2afeb54..e4d8755c 100644
Binary files a/README.d/01-download-certs.avif and b/README.d/01-download-certs.avif differ
diff --git a/README.d/03-check-certs.avif b/README.d/03-check-certs.avif
index 1f03ad2c..6610ac47 100644
Binary files a/README.d/03-check-certs.avif and b/README.d/03-check-certs.avif differ
diff --git a/README.md b/README.md
index f7143ddf..68216a20 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ RouterOS Scripts
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -50,7 +50,7 @@ temporarily.
 
 > 💡️ **Hint**: If in doubt have a look at the badge at the top of each
 > page showing the minimum version required:
-> ![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)
+> ![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)
 
 > ℹ️ **Info**: The `main` branch is now RouterOS v7 only. If you are still
 > running RouterOS v6 switch to `routeros-v6` branch!
@@ -113,10 +113,6 @@ least, but make sure not to drop other targets:
 
 ![screenshot: builtin trust store](README.d/00-builtin-trust-store.avif)
 
-> 💡️ **Hint**: With RouterOS 7.20.x and before the functionality was
-> different. Set the trust for the builtin trust anchors:  
-> `/certificate/settings/set builtin-trust-anchors=trusted;`  
-
 You can skip the steps regarding *download and import certificate* and
 jump to [installation of scripts](#installation-of-scripts) now.
 
@@ -126,18 +122,18 @@ If you intend to download the scripts from a
 different location (for example from github.com) install the corresponding
 certificate chain.
 
-    /tool/fetch "https://rsc.eworm.de/main/certs/ISRG-Root-X2.pem" dst-path="isrg-root-x2.pem";
+    /tool/fetch "https://rsc.eworm.de/main/certs/Root-YE.pem" dst-path="root-ye.pem";
 
 ![screenshot: download certs](README.d/01-download-certs.avif)
 
 > ℹ️ **Info**: Note that the command above does *not* verify server
 > certificate, so if you want to be safe download with your workstations's
 > browser from CA's website and transfer the file to your MikroTik device:
-> *Let's Encrypt* / *ISRG* [ISRG Root X2 ↗️](https://letsencrypt.org/certs/isrg-root-x2.pem)
+> *Let's Encrypt* / *ISRG* [Root YE ↗️](https://letsencrypt.org/certs/gen-y/root-ye.pem)
 
 Then we import the certificate.
 
-    /certificate/import file-name="isrg-root-x2.pem" passphrase="";
+    /certificate/import file-name="root-ye.pem" passphrase="";
 
 Do not worry that the command is not shown - that happens because it contains
 a sensitive property, the passphrase.
@@ -145,11 +141,11 @@ a sensitive property, the passphrase.
 ![screenshot: import certs](README.d/02-import-certs.avif)
 
 For basic verification we rename the certificate and print it by
-fingerprint. Make sure exactly this one certificate ("*ISRG-Root-X2*")
+fingerprint. Make sure exactly this one certificate ("*Root-YE*")
 is shown.
 
-    /certificate/set name="ISRG-Root-X2" [ find where common-name="ISRG Root X2" ];
-    /certificate/print proplist=name,fingerprint where fingerprint="69729b8e15a86efc177a57afb7171dfc64add28c2fca8cf1507e34453ccb1470";
+    /certificate/set name="Root-YE" [ find where common-name="Root YE" ];
+    /certificate/print proplist=name,fingerprint where fingerprint="e14ffcad5b0025731006caa43a121a22d8e9700f4fb9cf852f02a708aa5d5666";
 
 ![screenshot: check certs](README.d/03-check-certs.avif)
 
@@ -230,7 +226,7 @@ everything is up-to-date it will not produce any output.
 If the update includes news or requires configuration changes a notification
 is sent - in addition to terminal output and log messages.
 
-![news and changes notification](README.d/notification-news-and-changes.avif)
+![notification: news and changes](README.d/notification-news-and-changes.avif)
 
 Adding a script
 ---------------
diff --git a/accesslist-duplicates.capsman.rsc b/accesslist-duplicates.capsman.rsc
index cb194326..99b44178 100644
--- a/accesslist-duplicates.capsman.rsc
+++ b/accesslist-duplicates.capsman.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # print duplicate antries in wireless access list
 # https://rsc.eworm.de/doc/accesslist-duplicates.md
diff --git a/accesslist-duplicates.local.rsc b/accesslist-duplicates.local.rsc
index 4d545707..a860065d 100644
--- a/accesslist-duplicates.local.rsc
+++ b/accesslist-duplicates.local.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # print duplicate antries in wireless access list
 # https://rsc.eworm.de/doc/accesslist-duplicates.md
diff --git a/accesslist-duplicates.template.rsc b/accesslist-duplicates.template.rsc
index 1e54fcd2..24f91dee 100644
--- a/accesslist-duplicates.template.rsc
+++ b/accesslist-duplicates.template.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # print duplicate antries in wireless access list
 # https://rsc.eworm.de/doc/accesslist-duplicates.md
diff --git a/accesslist-duplicates.wifi.rsc b/accesslist-duplicates.wifi.rsc
index 9a8892b8..0d33a2c0 100644
--- a/accesslist-duplicates.wifi.rsc
+++ b/accesslist-duplicates.wifi.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # print duplicate antries in wireless access list
 # https://rsc.eworm.de/doc/accesslist-duplicates.md
diff --git a/backup-cloud.rsc b/backup-cloud.rsc
index b4925f33..d8fb0859 100644
--- a/backup-cloud.rsc
+++ b/backup-cloud.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: backup-script, order=40
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # upload backup to MikroTik cloud
 # https://rsc.eworm.de/doc/backup-cloud.md
diff --git a/backup-email.rsc b/backup-email.rsc
index 70b18c06..6f665dbb 100644
--- a/backup-email.rsc
+++ b/backup-email.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: backup-script, order=20
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # create and email backup and config file
 # https://rsc.eworm.de/doc/backup-email.md
diff --git a/backup-partition.rsc b/backup-partition.rsc
index 78f4cce1..9ce8cdf6 100644
--- a/backup-partition.rsc
+++ b/backup-partition.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: backup-script, order=70
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, scheduler
 #
 # save configuration to fallback partition
diff --git a/backup-upload.rsc b/backup-upload.rsc
index b89d123d..5c6003ec 100644
--- a/backup-upload.rsc
+++ b/backup-upload.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: backup-script, order=50
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch
 #
 # create and upload backup and config file
diff --git a/capsman-download-packages.capsman.rsc b/capsman-download-packages.capsman.rsc
index 8cedf01b..617ba892 100644
--- a/capsman-download-packages.capsman.rsc
+++ b/capsman-download-packages.capsman.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # download and cleanup packages for CAP installation from CAPsMAN
 # https://rsc.eworm.de/doc/capsman-download-packages.md
diff --git a/capsman-download-packages.template.rsc b/capsman-download-packages.template.rsc
index ffb622ba..e1939025 100644
--- a/capsman-download-packages.template.rsc
+++ b/capsman-download-packages.template.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # download and cleanup packages for CAP installation from CAPsMAN
 # https://rsc.eworm.de/doc/capsman-download-packages.md
diff --git a/capsman-download-packages.wifi.rsc b/capsman-download-packages.wifi.rsc
index 1aefee63..cfbde0d3 100644
--- a/capsman-download-packages.wifi.rsc
+++ b/capsman-download-packages.wifi.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # download and cleanup packages for CAP installation from CAPsMAN
 # https://rsc.eworm.de/doc/capsman-download-packages.md
diff --git a/capsman-rolling-upgrade.capsman.rsc b/capsman-rolling-upgrade.capsman.rsc
index caa768d8..9ef13720 100644
--- a/capsman-rolling-upgrade.capsman.rsc
+++ b/capsman-rolling-upgrade.capsman.rsc
@@ -5,7 +5,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: capsman-rolling-upgrade.capsman
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # upgrade CAPs one after another
 # https://rsc.eworm.de/doc/capsman-rolling-upgrade.md
diff --git a/capsman-rolling-upgrade.template.rsc b/capsman-rolling-upgrade.template.rsc
index d38cdda9..d40dcfef 100644
--- a/capsman-rolling-upgrade.template.rsc
+++ b/capsman-rolling-upgrade.template.rsc
@@ -5,7 +5,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: capsman-rolling-upgrade%TEMPL%
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # upgrade CAPs one after another
 # https://rsc.eworm.de/doc/capsman-rolling-upgrade.md
diff --git a/capsman-rolling-upgrade.wifi.rsc b/capsman-rolling-upgrade.wifi.rsc
index 330ec04d..3c539bdc 100644
--- a/capsman-rolling-upgrade.wifi.rsc
+++ b/capsman-rolling-upgrade.wifi.rsc
@@ -5,7 +5,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: capsman-rolling-upgrade.wifi
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # upgrade CAPs one after another
 # https://rsc.eworm.de/doc/capsman-rolling-upgrade.md
diff --git a/certificate-renew-issued.rsc b/certificate-renew-issued.rsc
index e78669f4..3201a361 100644
--- a/certificate-renew-issued.rsc
+++ b/certificate-renew-issued.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # renew locally issued certificates
 # https://rsc.eworm.de/doc/certificate-renew-issued.md
diff --git a/certs/Makefile b/certs/Makefile
index 8b516e4d..c9a33798 100644
--- a/certs/Makefile
+++ b/certs/Makefile
@@ -12,12 +12,12 @@ DOMAINS_DUAL = \
 	cloudflare-dns.com/SSL-com-Root-Certification-Authority-ECC \
 	dns.google/GTS-Root-RX \
 	dns.quad9.net/DigiCert-Global-Root-G3 \
-	git.eworm.de/ISRG-Root-X2 \
+	git.eworm.de/Root-YE \
 	gitlab.com/USERTrust-RSA-Certification-Authority \
 	lists.blocklist.de/GTS-Root-R4 \
 	matrix.org/GTS-Root-R4 \
 	raw.githubusercontent.com/ISRG-Root-X1 \
-	rsc.eworm.de/ISRG-Root-X2 \
+	rsc.eworm.de/Root-YE \
 	upgrade.mikrotik.com/ISRG-Root-X1
 DOMAINS_IPV4 = \
 	1.1.1.1/SSL-com-Root-Certification-Authority-ECC \
diff --git a/check-certificates.rsc b/check-certificates.rsc
index 7e2fed04..47ed7d67 100644
--- a/check-certificates.rsc
+++ b/check-certificates.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch
 #
 # check for certificate validity
@@ -30,7 +30,6 @@
   :global ScriptLock;
   :global SendNotification2;
   :global SymbolForNotification;
-  :global UrlEncode;
   :global WaitFullyConnected;
 
   :local CheckCertificatesDownloadImport do={
@@ -46,11 +45,10 @@
     :global FetchUserAgentStr;
     :global LogPrint;
     :global RmFile;
-    :global UrlEncode;
     :global WaitForFile;
 
     :foreach Type in={ "p12"; "pem" } do={
-      :local CertFileName ([ $UrlEncode $FetchName ] . "." . $Type);
+      :local CertFileName ([ :convert to=url $FetchName ] . "." . $Type);
       $LogPrint debug $ScriptName ("Trying type '" . $Type . "' for '" . $CertName . \
           "' (file '" . $CertFileName . "')...");
 
@@ -202,7 +200,7 @@
       } else={
         $LogPrint debug $ScriptName ("Certificate '" . $CertVal->"name" . "' was not updated, but replaced.");
 
-        :local CertNew [ /certificate/find where name~("^" . [ $EscapeForRegEx [ $UrlEncode $FetchName ] ] . "\\.(p12|pem)_[0-9]+\$") \
+        :local CertNew [ /certificate/find where name~("^" . [ $EscapeForRegEx [ :convert to=url $FetchName ] ] . "\\.(p12|pem)_[0-9]+\$") \
           (common-name=($CertVal->"common-name") or subject-alt-name~("(^|\\W)(DNS|IP):" . [ $EscapeForRegEx $LastName ] . "(\\W|\$)")) \
           fingerprint!=[ :tostr ($CertVal->"fingerprint") ] ];
         :local CertNewVal [ /certificate/get $CertNew ];
diff --git a/check-health.d/state.rsc b/check-health.d/state.rsc
index 0728b45e..9b3a07a7 100644
--- a/check-health.d/state.rsc
+++ b/check-health.d/state.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # check for RouterOS health state - state plugin
 # https://rsc.eworm.de/doc/check-health.md
diff --git a/check-health.d/temperature.rsc b/check-health.d/temperature.rsc
index fdce5dcb..36975cfe 100644
--- a/check-health.d/temperature.rsc
+++ b/check-health.d/temperature.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # check for RouterOS health state - temperature plugin
 # https://rsc.eworm.de/doc/check-health.md
@@ -30,8 +30,7 @@
   }
 
   :local TempToNum do={
-    :global CharacterReplace;
-    :local T [ :toarray [ $CharacterReplace $1 "." "," ] ];
+    :local T [ :toarray delimiter="." $1 ];
     :return ($T->0 * 10 + $T->1);
   }
 
diff --git a/check-health.d/voltage.rsc b/check-health.d/voltage.rsc
index 67febc2b..380556cc 100644
--- a/check-health.d/voltage.rsc
+++ b/check-health.d/voltage.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # check for RouterOS health state - voltage plugin
 # https://rsc.eworm.de/doc/check-health.md
diff --git a/check-health.rsc b/check-health.rsc
index 51438966..2e864f50 100644
--- a/check-health.rsc
+++ b/check-health.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # check for RouterOS health state
 # https://rsc.eworm.de/doc/check-health.md
@@ -31,8 +31,7 @@
   :global ValidateSyntax;
 
   :local TempToNum do={
-    :global CharacterReplace;
-    :local T [ :toarray [ $CharacterReplace $1 "." "," ] ];
+    :local T [ :toarray delimiter="." $1 ];
     :return ($T->0 * 10 + $T->1);
   }
 
diff --git a/check-lte-firmware-upgrade.rsc b/check-lte-firmware-upgrade.rsc
index 2087075e..22e88e1f 100644
--- a/check-lte-firmware-upgrade.rsc
+++ b/check-lte-firmware-upgrade.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # check for LTE firmware upgrade, send notification
 # https://rsc.eworm.de/doc/check-lte-firmware-upgrade.md
diff --git a/check-perpetual-license.rsc b/check-perpetual-license.rsc
index 21d63cad..7933a2be 100644
--- a/check-perpetual-license.rsc
+++ b/check-perpetual-license.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2025-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # check perpetual license on CHR
 # https://rsc.eworm.de/doc/check-perpetual-license.md
diff --git a/check-routeros-update.rsc b/check-routeros-update.rsc
index bf3acd98..634a0d1d 100644
--- a/check-routeros-update.rsc
+++ b/check-routeros-update.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch, scheduler
 #
 # check for RouterOS update, send notification and/or install
diff --git a/collect-wireless-mac.capsman.rsc b/collect-wireless-mac.capsman.rsc
index 126153a0..e510a347 100644
--- a/collect-wireless-mac.capsman.rsc
+++ b/collect-wireless-mac.capsman.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=40
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # collect wireless mac adresses in access list
 # https://rsc.eworm.de/doc/collect-wireless-mac.md
diff --git a/collect-wireless-mac.local.rsc b/collect-wireless-mac.local.rsc
index f3ede554..968e49c8 100644
--- a/collect-wireless-mac.local.rsc
+++ b/collect-wireless-mac.local.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=40
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # collect wireless mac adresses in access list
 # https://rsc.eworm.de/doc/collect-wireless-mac.md
diff --git a/collect-wireless-mac.template.rsc b/collect-wireless-mac.template.rsc
index 1e1ed139..1760fe90 100644
--- a/collect-wireless-mac.template.rsc
+++ b/collect-wireless-mac.template.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=40
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # collect wireless mac adresses in access list
 # https://rsc.eworm.de/doc/collect-wireless-mac.md
diff --git a/collect-wireless-mac.wifi.rsc b/collect-wireless-mac.wifi.rsc
index 35165a92..617d911d 100644
--- a/collect-wireless-mac.wifi.rsc
+++ b/collect-wireless-mac.wifi.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=40
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # collect wireless mac adresses in access list
 # https://rsc.eworm.de/doc/collect-wireless-mac.md
diff --git a/contrib/badges.md b/contrib/badges.md
index af4071c4..bef4c0d4 100644
--- a/contrib/badges.md
+++ b/contrib/badges.md
@@ -1,6 +1,6 @@
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
diff --git a/contrib/html.sh b/contrib/html.sh
index adacbbb8..0fca66ee 100755
--- a/contrib/html.sh
+++ b/contrib/html.sh
@@ -17,6 +17,7 @@ markdown -f toc,idanchor "${1}" | sed \
 	-e '/<h[1234] /s|-2[1789cd]-||g' \
 	-e '/<h[1234] /s|-3[f]-||g' \
 	-e '/^<pre>/s|pre|pre class="code" onclick="CopyToClipboard(this)"|g' \
+	-e '/<img src=".*" alt="[a-z]\+: .*" \/>/s|alt="\([a-z]\+\):|class="\1" alt="\1:|' \
 	-e '/The above link may be broken on code hosting sites/s|blockquote|blockquote style="display: none;"|'
 
 sed \
diff --git a/contrib/html.sh.d/foot.html b/contrib/html.sh.d/foot.html
index 9e28e115..f7c0b83b 100644
--- a/contrib/html.sh.d/foot.html
+++ b/contrib/html.sh.d/foot.html
@@ -1,3 +1,4 @@
+</span>
 
 <p class="foot">RouterOS Scripts documentation generated on <i>__DATE__</i> for <i>__VERSION__</i><br />
 Copyright &copy; 2013-2026 Christian Hesse &lt;mail@eworm.de&gt;</p>
diff --git a/contrib/html.sh.d/head.html b/contrib/html.sh.d/head.html
index 656a63c0..8621350c 100644
--- a/contrib/html.sh.d/head.html
+++ b/contrib/html.sh.d/head.html
@@ -6,7 +6,7 @@
 <script type="text/javascript" src="__GENERAL__/clipboard.js"></script>
 </head><body>
 
-<table><tr>
+<table class="head"><tr>
   <td><img src="__GENERAL__/eworm-meadow.avif" alt="eworm on meadow" /></td>
   <td><img src="__GENERAL__/qr-code.png" alt="QR code: rsc.eworm.de" /></td>
   <td class="head"><span class="top">RouterOS Scripts</span><br />
@@ -14,3 +14,4 @@
 </tr></table>
 <hr />
 
+<span class="markdown">
diff --git a/contrib/logo-color.html b/contrib/logo-color.html
index c39a20b8..e369694f 100644
--- a/contrib/logo-color.html
+++ b/contrib/logo-color.html
@@ -40,9 +40,9 @@ something that differentiates? Color it!</p>
 <p>Then right-click, click "<i>Take Screenshot</i>" and finally select the
 logo and download it.</p>
 
-<p><img src="logo-color.d/browser-01.avif" alt="Screenshot Browser 01"></p>
-<p><img src="logo-color.d/browser-02.avif" alt="Screenshot Browser 02"></p>
-<p><img src="logo-color.d/browser-03.avif" alt="Screenshot Browser 03"></p>
+<p><img src="logo-color.d/browser-01.avif" class="screenshot" alt="screenshot: browser 01"></p>
+<p><img src="logo-color.d/browser-02.avif" class="screenshot" alt="screenshot: browser 02"></p>
+<p><img src="logo-color.d/browser-03.avif" class="screenshot" alt="screenshot: browser 03"></p>
 
 <p>(This example is with
 <a href="https://www.mozilla.org/firefox/">Mozilla Firefox ↗️</a>. The workflow
diff --git a/contrib/telegram.md b/contrib/telegram.md
index 192fd6cb..b222c82b 100644
--- a/contrib/telegram.md
+++ b/contrib/telegram.md
@@ -4,7 +4,7 @@ Telegram
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -263,6 +263,10 @@ Notes
 
     /save next Another satisfied user. 😊 Next, please!
 
+#### Notename
+
+    /save notename The `notename` is just an example from my note listing. Use the literal name of the note you want to see!
+
 #### Off-topic
 
     /save off-topic Please note this group is not about MikroTik RouterOS in general, but [RouterOS Scripts](https://rsc.eworm.de/). Your request is not about scripting at all, so please discuss somewhere else. See the [MikroTik RouterOS users (english)](https://t.me/RouterOS_users_english) group or official Mikrotik forums (https://forum.mikrotik.com/).
diff --git a/daily-psk.capsman.rsc b/daily-psk.capsman.rsc
index 2cee46ed..2c52ada8 100644
--- a/daily-psk.capsman.rsc
+++ b/daily-psk.capsman.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update daily PSK (pre shared key)
 # https://rsc.eworm.de/doc/daily-psk.md
@@ -27,7 +27,6 @@
   :global ScriptLock;
   :global SendNotification2;
   :global SymbolForNotification;
-  :global UrlEncode;
   :global WaitForFile;
   :global WaitFullyConnected;
 
@@ -78,7 +77,7 @@
           $LogPrint debug $ScriptName ("Already sent a mail for SSID " . $Ssid . ", skipping.");
         } else={
           :local Link ($DailyPskQrCodeUrl . \
-              "?scale=8&level=1&ssid=" . [ $UrlEncode $Ssid ] . "&pass=" . [ $UrlEncode $NewPsk ]);
+              "?scale=8&level=1&ssid=" . [ :convert to=url $Ssid ] . "&pass=" . [ :convert to=url $NewPsk ]);
           $SendNotification2 ({ origin=$ScriptName; \
             subject=([ $SymbolForNotification "calendar" ] . "daily PSK " . $Ssid); \
             message=("This is the daily PSK on " . $Identity . ":\n\n" . \
diff --git a/daily-psk.local.rsc b/daily-psk.local.rsc
index fbf6dafe..fd63f873 100644
--- a/daily-psk.local.rsc
+++ b/daily-psk.local.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update daily PSK (pre shared key)
 # https://rsc.eworm.de/doc/daily-psk.md
@@ -27,7 +27,6 @@
   :global ScriptLock;
   :global SendNotification2;
   :global SymbolForNotification;
-  :global UrlEncode;
   :global WaitForFile;
   :global WaitFullyConnected;
 
@@ -77,7 +76,7 @@
           $LogPrint debug $ScriptName ("Already sent a mail for SSID " . $Ssid . ", skipping.");
         } else={
           :local Link ($DailyPskQrCodeUrl . \
-              "?scale=8&level=1&ssid=" . [ $UrlEncode $Ssid ] . "&pass=" . [ $UrlEncode $NewPsk ]);
+              "?scale=8&level=1&ssid=" . [ :convert to=url $Ssid ] . "&pass=" . [ :convert to=url $NewPsk ]);
           $SendNotification2 ({ origin=$ScriptName; \
             subject=([ $SymbolForNotification "calendar" ] . "daily PSK " . $Ssid); \
             message=("This is the daily PSK on " . $Identity . ":\n\n" . \
diff --git a/daily-psk.template.rsc b/daily-psk.template.rsc
index 81244b86..92a7f139 100644
--- a/daily-psk.template.rsc
+++ b/daily-psk.template.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update daily PSK (pre shared key)
 # https://rsc.eworm.de/doc/daily-psk.md
@@ -28,7 +28,6 @@
   :global ScriptLock;
   :global SendNotification2;
   :global SymbolForNotification;
-  :global UrlEncode;
   :global WaitForFile;
   :global WaitFullyConnected;
 
@@ -93,7 +92,7 @@
           $LogPrint debug $ScriptName ("Already sent a mail for SSID " . $Ssid . ", skipping.");
         } else={
           :local Link ($DailyPskQrCodeUrl . \
-              "?scale=8&level=1&ssid=" . [ $UrlEncode $Ssid ] . "&pass=" . [ $UrlEncode $NewPsk ]);
+              "?scale=8&level=1&ssid=" . [ :convert to=url $Ssid ] . "&pass=" . [ :convert to=url $NewPsk ]);
           $SendNotification2 ({ origin=$ScriptName; \
             subject=([ $SymbolForNotification "calendar" ] . "daily PSK " . $Ssid); \
             message=("This is the daily PSK on " . $Identity . ":\n\n" . \
diff --git a/daily-psk.wifi.rsc b/daily-psk.wifi.rsc
index 636e9f43..2bcfd9fd 100644
--- a/daily-psk.wifi.rsc
+++ b/daily-psk.wifi.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update daily PSK (pre shared key)
 # https://rsc.eworm.de/doc/daily-psk.md
@@ -27,7 +27,6 @@
   :global ScriptLock;
   :global SendNotification2;
   :global SymbolForNotification;
-  :global UrlEncode;
   :global WaitForFile;
   :global WaitFullyConnected;
 
@@ -78,7 +77,7 @@
           $LogPrint debug $ScriptName ("Already sent a mail for SSID " . $Ssid . ", skipping.");
         } else={
           :local Link ($DailyPskQrCodeUrl . \
-              "?scale=8&level=1&ssid=" . [ $UrlEncode $Ssid ] . "&pass=" . [ $UrlEncode $NewPsk ]);
+              "?scale=8&level=1&ssid=" . [ :convert to=url $Ssid ] . "&pass=" . [ :convert to=url $NewPsk ]);
           $SendNotification2 ({ origin=$ScriptName; \
             subject=([ $SymbolForNotification "calendar" ] . "daily PSK " . $Ssid); \
             message=("This is the daily PSK on " . $Identity . ":\n\n" . \
diff --git a/dhcp-lease-comment.capsman.rsc b/dhcp-lease-comment.capsman.rsc
index d039cb02..6bc92d8e 100644
--- a/dhcp-lease-comment.capsman.rsc
+++ b/dhcp-lease-comment.capsman.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=60
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update dhcp-server lease comment with infos from access-list
 # https://rsc.eworm.de/doc/dhcp-lease-comment.md
diff --git a/dhcp-lease-comment.local.rsc b/dhcp-lease-comment.local.rsc
index 2c5b4efa..4cbbb92a 100644
--- a/dhcp-lease-comment.local.rsc
+++ b/dhcp-lease-comment.local.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=60
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update dhcp-server lease comment with infos from access-list
 # https://rsc.eworm.de/doc/dhcp-lease-comment.md
diff --git a/dhcp-lease-comment.template.rsc b/dhcp-lease-comment.template.rsc
index a06983f0..54a5653f 100644
--- a/dhcp-lease-comment.template.rsc
+++ b/dhcp-lease-comment.template.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=60
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update dhcp-server lease comment with infos from access-list
 # https://rsc.eworm.de/doc/dhcp-lease-comment.md
diff --git a/dhcp-lease-comment.wifi.rsc b/dhcp-lease-comment.wifi.rsc
index 3fea1bf6..00e3d8e7 100644
--- a/dhcp-lease-comment.wifi.rsc
+++ b/dhcp-lease-comment.wifi.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=60
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update dhcp-server lease comment with infos from access-list
 # https://rsc.eworm.de/doc/dhcp-lease-comment.md
diff --git a/dhcp-to-dns.rsc b/dhcp-to-dns.rsc
index 37aaadac..40860166 100644
--- a/dhcp-to-dns.rsc
+++ b/dhcp-to-dns.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=20
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # check DHCP leases and add/remove/update DNS entries
 # https://rsc.eworm.de/doc/dhcp-to-dns.md
diff --git a/dhcpv4-server-lease.rsc b/dhcpv4-server-lease.rsc
index 899674d1..a03659af 100644
--- a/dhcpv4-server-lease.rsc
+++ b/dhcpv4-server-lease.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # run scripts on IPv4 DHCP server lease
 # https://rsc.eworm.de/doc/dhcpv4-server-lease.md
diff --git a/dhcpv6-client-lease.rsc b/dhcpv6-client-lease.rsc
index d3c1b9aa..d539e8dc 100644
--- a/dhcpv6-client-lease.rsc
+++ b/dhcpv6-client-lease.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # run scripts on IPv6 DHCP client lease
 # https://rsc.eworm.de/doc/dhcpv6-client-lease.md
diff --git a/doc/accesslist-duplicates.md b/doc/accesslist-duplicates.md
index 9eca50d3..2fd3d8ff 100644
--- a/doc/accesslist-duplicates.md
+++ b/doc/accesslist-duplicates.md
@@ -4,7 +4,7 @@ Find and remove access list duplicates
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/backup-cloud.md b/doc/backup-cloud.md
index dcbd0f75..49d440d1 100644
--- a/doc/backup-cloud.md
+++ b/doc/backup-cloud.md
@@ -4,7 +4,7 @@ Upload backup to Mikrotik cloud
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -26,7 +26,7 @@ This script uploads
 
 ### Sample notification
 
-![backup-cloud notification](backup-cloud.d/notification.avif)
+![notification: backup-cloud](backup-cloud.d/notification.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/backup-email.md b/doc/backup-email.md
index e55a0d7b..df82a26e 100644
--- a/doc/backup-email.md
+++ b/doc/backup-email.md
@@ -4,7 +4,7 @@ Send backup via e-mail
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/backup-partition.md b/doc/backup-partition.md
index 6588cbe3..e6b3c9c3 100644
--- a/doc/backup-partition.md
+++ b/doc/backup-partition.md
@@ -4,7 +4,7 @@ Save configuration to fallback partition
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/backup-upload.md b/doc/backup-upload.md
index bbf5227b..d611db3c 100644
--- a/doc/backup-upload.md
+++ b/doc/backup-upload.md
@@ -4,7 +4,7 @@ Upload backup to server
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -26,7 +26,7 @@ configuration export (`/export terse show-sensitive`) to external server.
 
 ### Sample notification
 
-![backup-upload notification](backup-upload.d/notification.avif)
+![notification: backup-upload](backup-upload.d/notification.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/capsman-download-packages.md b/doc/capsman-download-packages.md
index c00b7235..f85507bc 100644
--- a/doc/capsman-download-packages.md
+++ b/doc/capsman-download-packages.md
@@ -4,7 +4,7 @@ Download packages for CAP upgrade from CAPsMAN
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/capsman-rolling-upgrade.md b/doc/capsman-rolling-upgrade.md
index 85f86289..b2745a79 100644
--- a/doc/capsman-rolling-upgrade.md
+++ b/doc/capsman-rolling-upgrade.md
@@ -4,7 +4,7 @@ Run rolling CAP upgrades from CAPsMAN
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/certificate-renew-issued.md b/doc/certificate-renew-issued.md
index 2ed56ec5..c43f9e0f 100644
--- a/doc/certificate-renew-issued.md
+++ b/doc/certificate-renew-issued.md
@@ -4,7 +4,7 @@ Renew locally issued certificates
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/check-certificates.md b/doc/check-certificates.md
index c6db7c88..b5c9ab9d 100644
--- a/doc/check-certificates.md
+++ b/doc/check-certificates.md
@@ -4,7 +4,7 @@ Renew certificates and notify on expiration
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -21,8 +21,8 @@ certificates that are still about to expire.
 
 ### Sample notifications
 
-![check-certificates notification warning](check-certificates.d/notification-01-warn.avif)  
-![check-certificates notification renew](check-certificates.d/notification-02-renew.avif)
+![notification: check-certificates warning](check-certificates.d/notification-01-warn.avif)  
+![notification: check-certificates renew](check-certificates.d/notification-02-renew.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/check-health.md b/doc/check-health.md
index d67a3dde..5af8f385 100644
--- a/doc/check-health.md
+++ b/doc/check-health.md
@@ -4,7 +4,7 @@ Notify about health state
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -40,27 +40,27 @@ sensors available in hardware:
 
 #### CPU utilization
 
-![check-health notification cpu utilization high](check-health.d/notification-01-cpu-utilization-high.avif)  
-![check-health notification cpu utilization ok](check-health.d/notification-02-cpu-utilization-ok.avif)
+![notification: check-health cpu utilization high](check-health.d/notification-01-cpu-utilization-high.avif)  
+![notification: check-health cpu utilization ok](check-health.d/notification-02-cpu-utilization-ok.avif)
 
 #### RAM utilization (low available RAM)
 
-![check-health notification ram utilization high](check-health.d/notification-03-ram-utilization-high.avif)  
-![check-health notification ram utilization ok](check-health.d/notification-04-ram-utilization-ok.avif)
+![notification: check-health ram utilization high](check-health.d/notification-03-ram-utilization-high.avif)  
+![notification: check-health ram utilization ok](check-health.d/notification-04-ram-utilization-ok.avif)
 
 #### Voltage
 
-![check-health notification voltage](check-health.d/notification-05-voltage.avif)
+![notification: check-health voltage](check-health.d/notification-05-voltage.avif)
 
 #### Temperature
 
-![check-health notification temperature high](check-health.d/notification-06-temperature-high.avif)  
-![check-health notification temperature ok](check-health.d/notification-07-temperature-ok.avif)
+![notification: check-health temperature high](check-health.d/notification-06-temperature-high.avif)  
+![notification: check-health temperature ok](check-health.d/notification-07-temperature-ok.avif)
 
 #### PSU state
 
-![check-health notification state fail](check-health.d/notification-08-state-fail.avif)  
-![check-health notification state ok](check-health.d/notification-09-state-ok.avif)
+![notification: check-health state fail](check-health.d/notification-08-state-fail.avif)  
+![notification: check-health state ok](check-health.d/notification-09-state-ok.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/check-lte-firmware-upgrade.md b/doc/check-lte-firmware-upgrade.md
index 37ca4896..74bd1e13 100644
--- a/doc/check-lte-firmware-upgrade.md
+++ b/doc/check-lte-firmware-upgrade.md
@@ -4,7 +4,7 @@ Notify on LTE firmware upgrade
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -26,7 +26,7 @@ upgrades. Currently supported LTE hardware:
 
 ### Sample notification
 
-![check-lte-firmware-upgrade notification](check-lte-firmware-upgrade.d/notification.avif)
+![notification: check-lte-firmware-upgrade](check-lte-firmware-upgrade.d/notification.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/check-perpetual-license.md b/doc/check-perpetual-license.md
index de91eeb5..67883c07 100644
--- a/doc/check-perpetual-license.md
+++ b/doc/check-perpetual-license.md
@@ -4,7 +4,7 @@ Check perpetual license on CHR
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -22,8 +22,8 @@ and sends a notification to warn before expiration.
 
 ### Sample notifications
 
-![check-perpetual-license notification warn](check-perpetual-license.d/notification-01-warn.avif)  
-![check-perpetual-license notification renew](check-perpetual-license.d/notification-02-renew.avif)
+![notification: check-perpetual-license warn](check-perpetual-license.d/notification-01-warn.avif)  
+![notification: check-perpetual-license renew](check-perpetual-license.d/notification-02-renew.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/check-routeros-update.md b/doc/check-routeros-update.md
index 18ad444a..6c84e300 100644
--- a/doc/check-routeros-update.md
+++ b/doc/check-routeros-update.md
@@ -4,7 +4,7 @@ Notify on RouterOS update
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -37,8 +37,8 @@ automatically is supported.
 
 ### Sample notifications
 
-![check-routeros-update notification found](check-routeros-update.d/notification-01-found.avif)  
-![check-routeros-update notification neighbor](check-routeros-update.d/notification-02-neighbor.avif)
+![notification: check-routeros-update found](check-routeros-update.d/notification-01-found.avif)  
+![notification: check-routeros-update neighbor](check-routeros-update.d/notification-02-neighbor.avif)
 
 Requirements and installation
 -----------------------------
@@ -88,7 +88,7 @@ Be notified when run from scheduler or run it manually:
 
 If an update is found you can install it right away.
 
-![Terminal](check-routeros-update.d/terminal.avif)
+![screenshot: terminal](check-routeros-update.d/terminal.avif)
 
 Installing script [packages-update](packages-update.md) gives extra options.
 
diff --git a/doc/collect-wireless-mac.md b/doc/collect-wireless-mac.md
index 96b314e1..6ec1e90b 100644
--- a/doc/collect-wireless-mac.md
+++ b/doc/collect-wireless-mac.md
@@ -4,7 +4,7 @@ Collect MAC addresses in wireless access list
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -24,7 +24,7 @@ and modify it to your needs.
 
 ### Sample notification
 
-![collect-wireless-mac notification](collect-wireless-mac.d/notification.avif)
+![notification: collect-wireless-mac](collect-wireless-mac.d/notification.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/daily-psk.md b/doc/daily-psk.md
index 7ddb4d98..3d8691d1 100644
--- a/doc/daily-psk.md
+++ b/doc/daily-psk.md
@@ -4,7 +4,7 @@ Use wireless network with daily psk
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -21,7 +21,7 @@ passphrase to a pseudo-random string daily.
 
 ### Sample notification
 
-![daily-psk notification](daily-psk.d/notification.avif)
+![notification: daily-psk](daily-psk.d/notification.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/dhcp-lease-comment.md b/doc/dhcp-lease-comment.md
index 1a4e23aa..5dd6e5e8 100644
--- a/doc/dhcp-lease-comment.md
+++ b/doc/dhcp-lease-comment.md
@@ -4,7 +4,7 @@ Comment DHCP leases with info from access list
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/dhcp-to-dns.md b/doc/dhcp-to-dns.md
index 8c282b00..12988ad3 100644
--- a/doc/dhcp-to-dns.md
+++ b/doc/dhcp-to-dns.md
@@ -4,7 +4,7 @@ Create DNS records for DHCP leases
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/dhcpv4-server-lease.md b/doc/dhcpv4-server-lease.md
index e588101d..068400ef 100644
--- a/doc/dhcpv4-server-lease.md
+++ b/doc/dhcpv4-server-lease.md
@@ -4,7 +4,7 @@ Run other scripts on IPv4 DHCP server lease
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/dhcpv6-client-lease.md b/doc/dhcpv6-client-lease.md
index c126f2d4..208fa7ee 100644
--- a/doc/dhcpv6-client-lease.md
+++ b/doc/dhcpv6-client-lease.md
@@ -4,7 +4,7 @@ Run other scripts on IPv6 DHCP client lease
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/firmware-upgrade-reboot.md b/doc/firmware-upgrade-reboot.md
index 19fd94cb..052ab7ed 100644
--- a/doc/firmware-upgrade-reboot.md
+++ b/doc/firmware-upgrade-reboot.md
@@ -4,7 +4,7 @@ Automatically upgrade firmware and reboot
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/fw-addr-lists.md b/doc/fw-addr-lists.md
index 5b29af7c..fe1e748c 100644
--- a/doc/fw-addr-lists.md
+++ b/doc/fw-addr-lists.md
@@ -4,7 +4,7 @@ Download, import and update firewall address-lists
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/global-wait.md b/doc/global-wait.md
index 49f53c6a..c1033d9c 100644
--- a/doc/global-wait.md
+++ b/doc/global-wait.md
@@ -4,7 +4,7 @@ Wait for global functions and modules
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/gps-track.md b/doc/gps-track.md
index dc80b9f7..7617df7b 100644
--- a/doc/gps-track.md
+++ b/doc/gps-track.md
@@ -4,7 +4,7 @@ Send GPS position to server
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/hotspot-to-wpa.md b/doc/hotspot-to-wpa.md
index e4e77098..9b3b1976 100644
--- a/doc/hotspot-to-wpa.md
+++ b/doc/hotspot-to-wpa.md
@@ -4,7 +4,7 @@ Use WPA network with hotspot credentials
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/ip-addr-bridge.md b/doc/ip-addr-bridge.md
index 1868bc70..ddb0b45b 100644
--- a/doc/ip-addr-bridge.md
+++ b/doc/ip-addr-bridge.md
@@ -4,7 +4,7 @@ Manage IP addresses with bridge status
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/ipsec-to-dns.md b/doc/ipsec-to-dns.md
index cf4abeeb..a8469dfe 100644
--- a/doc/ipsec-to-dns.md
+++ b/doc/ipsec-to-dns.md
@@ -4,7 +4,7 @@ Create DNS records for IPSec peers
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/ipv6-update.md b/doc/ipv6-update.md
index fb42e931..cd6c8889 100644
--- a/doc/ipv6-update.md
+++ b/doc/ipv6-update.md
@@ -4,7 +4,7 @@ Update configuration on IPv6 prefix change
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/leds-mode.md b/doc/leds-mode.md
index 84098d53..ecef3b51 100644
--- a/doc/leds-mode.md
+++ b/doc/leds-mode.md
@@ -4,7 +4,7 @@ Manage LEDs dark mode
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/log-forward.md b/doc/log-forward.md
index 7bee120f..4835d718 100644
--- a/doc/log-forward.md
+++ b/doc/log-forward.md
@@ -4,7 +4,7 @@ Forward log messages via notification
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -37,8 +37,8 @@ log messages and forwards them via notification.
 
 ### Sample notifications
 
-![log-forward notification info](log-forward.d/notification-01-info.avif)  
-![log-forward notification warn](log-forward.d/notification-02-warn.avif)
+![notification: log-forward info](log-forward.d/notification-01-info.avif)  
+![notification: log-forward warn](log-forward.d/notification-02-warn.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/mod/bridge-port-to.md b/doc/mod/bridge-port-to.md
index e0e75b20..0d198187 100644
--- a/doc/mod/bridge-port-to.md
+++ b/doc/mod/bridge-port-to.md
@@ -4,7 +4,7 @@ Manage ports in bridge
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/mod/bridge-port-vlan.md b/doc/mod/bridge-port-vlan.md
index a8593fb2..2bb6917e 100644
--- a/doc/mod/bridge-port-vlan.md
+++ b/doc/mod/bridge-port-vlan.md
@@ -4,7 +4,7 @@ Manage VLANs on bridge ports
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/mod/inspectvar.md b/doc/mod/inspectvar.md
index 28032651..0cefbc0a 100644
--- a/doc/mod/inspectvar.md
+++ b/doc/mod/inspectvar.md
@@ -4,7 +4,7 @@ Inspect variables
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -33,7 +33,7 @@ Call the function `$InspectVar` with a variable as parameter:
 
     $InspectVar $ModeButton;
 
-![InspectVar](inspectvar.d/01-inspectvar.avif)
+![screenshot: InspectVar](inspectvar.d/01-inspectvar.avif)
 
 ---
 [⬅️ Go back to main README](../../README.md)  
diff --git a/doc/mod/ipcalc.md b/doc/mod/ipcalc.md
index c393ec3a..54eb766f 100644
--- a/doc/mod/ipcalc.md
+++ b/doc/mod/ipcalc.md
@@ -4,7 +4,7 @@ IP address calculation
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -43,7 +43,7 @@ It expects an IP address in CIDR notation as argument.
 
     $IPCalc 192.168.88.1/24;
 
-![IPCalc](ipcalc.d/01-ipcalc.avif)
+![screenshot: IPCalc](ipcalc.d/01-ipcalc.avif)
 
 ### IPCalcReturn
 
@@ -53,7 +53,7 @@ the information in a named array.
 
     :put ([ $IPCalcReturn  192.168.88.1/24 ]->"broadcast");
 
-![IPCalcReturn](ipcalc.d/02-ipcalcreturn.avif)
+![screenshot: IPCalcReturn](ipcalc.d/02-ipcalcreturn.avif)
 
 ---
 [⬅️ Go back to main README](../../README.md)  
diff --git a/doc/mod/notification-email.md b/doc/mod/notification-email.md
index cae7c94b..3539a6f7 100644
--- a/doc/mod/notification-email.md
+++ b/doc/mod/notification-email.md
@@ -4,7 +4,7 @@ Send notifications via e-mail
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/mod/notification-gotify.md b/doc/mod/notification-gotify.md
index 7482ba72..44dc509b 100644
--- a/doc/mod/notification-gotify.md
+++ b/doc/mod/notification-gotify.md
@@ -4,7 +4,7 @@ Send notifications via Gotify
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -38,7 +38,7 @@ and the [First Login ↗️](https://gotify.net/docs/first-login) setup. Once
 you have a user and account you can start creating apps. Each app is an
 independent notification feed for a device or application.
 
-![Create new app](notification-gotify.d/appsetup.avif)
+![screenshot: Create new app](notification-gotify.d/appsetup.avif)
  
 On creation apps are assigned a *Token* for authentification, you will need
 that in configuration.
diff --git a/doc/mod/notification-matrix.md b/doc/mod/notification-matrix.md
index 60001416..4c9a554a 100644
--- a/doc/mod/notification-matrix.md
+++ b/doc/mod/notification-matrix.md
@@ -4,7 +4,7 @@ Send notifications via Matrix
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -74,7 +74,7 @@ and write first part of the configuration:
 
     $SetupMatrixAuthenticate "@example:matrix.org" "v3ry-s3cr3t";
 
-![authenticate](notification-matrix.d/01-authenticate.avif)
+![screenshot: authenticate](notification-matrix.d/01-authenticate.avif)
 
 The configuration is written to a new configuration snippet
 `global-config-overlay.d/mod/notification-matrix`.
@@ -94,7 +94,7 @@ the invite.
 
     $SetupMatrixJoinRoom "!WUcxpSjKyxSGelouhA:matrix.org";
 
-![join room](notification-matrix.d/02-join-room.avif)
+![screenshot: join room](notification-matrix.d/02-join-room.avif)
 
 The configuration is appended to the configuration snippet
 `global-config-overlay.d/mod/notification-matrix`.
diff --git a/doc/mod/notification-ntfy.md b/doc/mod/notification-ntfy.md
index b3534017..0c33c27a 100644
--- a/doc/mod/notification-ntfy.md
+++ b/doc/mod/notification-ntfy.md
@@ -4,7 +4,7 @@ Send notifications via Ntfy
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/mod/notification-telegram.md b/doc/mod/notification-telegram.md
index 1d2cec8c..0b3119f1 100644
--- a/doc/mod/notification-telegram.md
+++ b/doc/mod/notification-telegram.md
@@ -4,7 +4,7 @@ Send notifications via Telegram
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -36,7 +36,7 @@ Configuration
 Open Telegram, then start a chat with [BotFather ↗️](https://t.me/BotFather) and
 create your own bot:
 
-![create new bot](notification-telegram.d/01-newbot.avif)
+![screenshot: create new bot](notification-telegram.d/01-newbot.avif)
 
 Set that token from *BotFather* (use your own!) to `TelegramTokenId`, for
 now just temporarily:
@@ -49,7 +49,7 @@ then send your first message. Any text will do. On your device run
 
     $GetTelegramChatId;
 
-![get chat id](notification-telegram.d/02-getchatid.avif)
+![screenshot: get chat id](notification-telegram.d/02-getchatid.avif)
 
 Finally edit `global-config-overlay`, add `TelegramTokenId` with the token
 from *BotFather* and `TelegramChatId` with your retrieved chat id. Then
@@ -104,7 +104,7 @@ Tips & Tricks
 You can use a profile photo for your bot to make it recognizable. Open the
 chat with [BotFather ↗️](https://t.me/BotFather) and set it there.
 
-![set profile photo](notification-telegram.d/03-setuserpic.avif)
+![screenshot: set profile photo](notification-telegram.d/03-setuserpic.avif)
 
 Have a look at my [Logo Color Changer](../../contrib/logo-color.html)
 to create a colored version of this scripts' logo.
diff --git a/doc/mod/scriptrunonce.md b/doc/mod/scriptrunonce.md
index e960d767..befc03c5 100644
--- a/doc/mod/scriptrunonce.md
+++ b/doc/mod/scriptrunonce.md
@@ -4,7 +4,7 @@ Download script and run it once
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -50,7 +50,7 @@ The function `$ScriptRunOnce` expects an URL (or name if
 
     $ScriptRunOnce https://rsc.eworm.de/main/doc/mod/scriptrunonce.d/hello-world.rsc;
 
-![ScriptRunOnce](scriptrunonce.d/01-scriptrunonce.avif)
+![screenshot: ScriptRunOnce](scriptrunonce.d/01-scriptrunonce.avif)
 
 Giving multiple scripts is possible, separated by comma.
 
diff --git a/doc/mode-button.md b/doc/mode-button.md
index 46a66b0c..2ac3149b 100644
--- a/doc/mode-button.md
+++ b/doc/mode-button.md
@@ -4,7 +4,7 @@ Mode button with multiple presses
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/netwatch-dns.md b/doc/netwatch-dns.md
index c80b819b..3aafd5d6 100644
--- a/doc/netwatch-dns.md
+++ b/doc/netwatch-dns.md
@@ -4,7 +4,7 @@ Manage DNS and DoH servers from netwatch
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/netwatch-notify.md b/doc/netwatch-notify.md
index 70d6fe03..20458c8b 100644
--- a/doc/netwatch-notify.md
+++ b/doc/netwatch-notify.md
@@ -4,7 +4,7 @@ Notify on host up and down
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -24,8 +24,8 @@ optional parent host is not down to avoid false alerts.
 
 ### Sample notifications
 
-![netwatch-notify notification down](netwatch-notify.d/notification-01-down.avif)  
-![netwatch-notify notification up](netwatch-notify.d/notification-02-up.avif)
+![notification: netwatch-notify down](netwatch-notify.d/notification-01-down.avif)  
+![notification: netwatch-notify up](netwatch-notify.d/notification-02-up.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/ospf-to-leds.md b/doc/ospf-to-leds.md
index aa660071..ad4d3e2f 100644
--- a/doc/ospf-to-leds.md
+++ b/doc/ospf-to-leds.md
@@ -4,7 +4,7 @@ Visualize OSPF state via LEDs
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/packages-update.md b/doc/packages-update.md
index 73354490..156724e6 100644
--- a/doc/packages-update.md
+++ b/doc/packages-update.md
@@ -4,7 +4,7 @@ Manage system update
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/ppp-on-up.md b/doc/ppp-on-up.md
index add5308f..e2cdde6b 100644
--- a/doc/ppp-on-up.md
+++ b/doc/ppp-on-up.md
@@ -4,7 +4,7 @@ Run scripts on ppp connection
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/sms-action.md b/doc/sms-action.md
index af44ae46..cf505c95 100644
--- a/doc/sms-action.md
+++ b/doc/sms-action.md
@@ -4,7 +4,7 @@ Act on received SMS
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/sms-forward.md b/doc/sms-forward.md
index 5f038926..706d13dd 100644
--- a/doc/sms-forward.md
+++ b/doc/sms-forward.md
@@ -4,7 +4,7 @@ Forward received SMS
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -22,7 +22,7 @@ A broadband interface with SMS support is required.
 
 ### Sample notification
 
-![sms-forward notification](sms-forward.d/notification.avif)
+![notification: sms-forward](sms-forward.d/notification.avif)
 
 Requirements and installation
 -----------------------------
diff --git a/doc/super-mario-theme.md b/doc/super-mario-theme.md
index badb1c56..997cc47c 100644
--- a/doc/super-mario-theme.md
+++ b/doc/super-mario-theme.md
@@ -4,7 +4,7 @@ Play Super Mario theme
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/telegram-chat.md b/doc/telegram-chat.md
index 51cd3d6a..dba49c72 100644
--- a/doc/telegram-chat.md
+++ b/doc/telegram-chat.md
@@ -4,7 +4,7 @@ Chat with your router and send commands via Telegram bot
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
@@ -61,13 +61,13 @@ containing `! identity` (exclamation mark, optional space and system's
 identity). To query all dynamic ip addresses form a device named "*MikroTik*"
 send `! MikroTik`, followed by `/ip/address/print where dynamic;`.
 
-![chat to specific device](telegram-chat.d/01-chat-specific.avif)
+![screenshot: chat to specific device](telegram-chat.d/01-chat-specific.avif)
 
 Devices can be grouped to chat with them simultaneously. The default group
 "*all*" can be activated by sending `! @all`, which will make all devices
 act on your commands.
 
-![chat to all devices](telegram-chat.d/02-chat-all.avif)
+![screenshot: chat to all devices](telegram-chat.d/02-chat-all.avif)
 
 Send a single exclamation mark or non-existent identity to make all
 devices passive again.
@@ -78,7 +78,7 @@ Let's assume you received a message from a device before, and want to send
 a command to that device. No need to activate it, you can just reply to
 that message.
 
-![reply to message](telegram-chat.d/03-reply.avif)
+![screenshot: reply to message](telegram-chat.d/03-reply.avif)
 
 Associated messages are cleared on device reboot.
 
diff --git a/doc/unattended-lte-firmware-upgrade.md b/doc/unattended-lte-firmware-upgrade.md
index 3e4e2d4b..9a05abfb 100644
--- a/doc/unattended-lte-firmware-upgrade.md
+++ b/doc/unattended-lte-firmware-upgrade.md
@@ -4,7 +4,7 @@ Install LTE firmware upgrade
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/update-gre-address.md b/doc/update-gre-address.md
index 64c61f21..8a16348d 100644
--- a/doc/update-gre-address.md
+++ b/doc/update-gre-address.md
@@ -4,7 +4,7 @@ Update GRE configuration with dynamic addresses
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/doc/update-tunnelbroker.md b/doc/update-tunnelbroker.md
index 342b1a1b..e97f3fea 100644
--- a/doc/update-tunnelbroker.md
+++ b/doc/update-tunnelbroker.md
@@ -4,7 +4,7 @@ Update tunnelbroker configuration
 [![GitHub stars](https://img.shields.io/github/stars/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=red)](https://github.com/eworm-de/routeros-scripts/stargazers)
 [![GitHub forks](https://img.shields.io/github/forks/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=green)](https://github.com/eworm-de/routeros-scripts/network)
 [![GitHub watchers](https://img.shields.io/github/watchers/eworm-de/routeros-scripts?logo=GitHub&style=flat&color=blue)](https://github.com/eworm-de/routeros-scripts/watchers)
-[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.19-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
+[![required RouterOS version](https://img.shields.io/badge/RouterOS-7.21-yellow?style=flat)](https://mikrotik.com/download/changelogs/)
 [![Telegram group @routeros_scripts](https://img.shields.io/badge/Telegram-%40routeros__scripts-%2326A5E4?logo=telegram&style=flat)](https://t.me/routeros_scripts)
 [![donate with PayPal](https://img.shields.io/badge/Like_it%3F-Donate!-orange?logo=githubsponsors&logoColor=orange&style=flat)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=A4ZXBD6YS2W8J)
 
diff --git a/firmware-upgrade-reboot.rsc b/firmware-upgrade-reboot.rsc
index 7c64909d..4b86c208 100644
--- a/firmware-upgrade-reboot.rsc
+++ b/firmware-upgrade-reboot.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2022-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # install firmware upgrade, and reboot
 # https://rsc.eworm.de/doc/firmware-upgrade-reboot.md
diff --git a/fw-addr-lists.rsc b/fw-addr-lists.rsc
index ac15c652..7fe41588 100644
--- a/fw-addr-lists.rsc
+++ b/fw-addr-lists.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2023-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # download, import and update firewall address-lists
 # https://rsc.eworm.de/doc/fw-addr-lists.md
@@ -72,11 +72,13 @@
       :local Data false;
       :local TimeOut [ $EitherOr [ :totime ($List->"timeout") ] $FwAddrListTimeOut ];
 
-      :if ([ :len ($List->"cert") ] > 0) do={
-        :set CheckCertificate true;
-        :if ([ $CertificateAvailable ($List->"cert") "fetch" ] = false) do={
-          $LogPrint warning $ScriptName ("Downloading required certificate (" . $FwListName . \
-              " / " . $List->"url" . ") failed, trying anyway.");
+      :foreach Cert in=[ :toarray delimiter=":" ($List->"cert") ] do={
+        :if ([ :len ($Cert) ] > 0) do={
+          :set CheckCertificate true;
+          :if ([ $CertificateAvailable $Cert "fetch" ] = false) do={
+            $LogPrint warning $ScriptName ("Downloading required certificate (" . $FwListName . \
+                " / " . $List->"url" . ") failed, trying anyway.");
+          }
         }
       }
 
diff --git a/general/style.css b/general/style.css
index c3e86901..f561766f 100644
--- a/general/style.css
+++ b/general/style.css
@@ -42,6 +42,12 @@ div.content {
 hr {
   clear: both;
 }
+img.notification {
+  box-shadow: 3px 3px 7px rgba(100,100,100,0.7);
+}
+img.screenshot {
+  box-shadow: 3px 3px 7px rgba(100,100,100,0.7);
+}
 img.logo {
   float: left;
   /* border-radius: 50%; */
@@ -66,6 +72,7 @@ pre {
 pre.code {
   background-color: #f8f8f8;
   border: 1px solid #ccc;
+  box-shadow: 3px 3px 7px rgba(100,100,100,0.7);
   overflow: auto;
   padding: 6px 10px;
   border-radius: 3px;
diff --git a/global-config.rsc b/global-config.rsc
index 0bb572b5..86187431 100644
--- a/global-config.rsc
+++ b/global-config.rsc
@@ -112,11 +112,11 @@
 :global FwAddrLists {
 #  "allow"={
 #    { url="https://rsc.eworm.de/main/fw-addr-lists.d/allow";
-#      cert="Root YE"; timeout=1w };
+#      cert="ISRG Root X2:Root YE"; timeout=1w };
 #  };
   "block"={
 #    { url="https://rsc.eworm.de/main/fw-addr-lists.d/block";
-#      cert="Root YE" };
+#      cert="ISRG Root X2:Root YE" };
     { url="https://raw.githubusercontent.com/stamparm/ipsum/refs/heads/master/levels/4.txt";
 #     # higher level (decrease the numerical value) for more addresses, and vice versa
       cert="ISRG Root X1" };
@@ -131,7 +131,7 @@
   };
 #  "mikrotik"={
 #    { url="https://rsc.eworm.de/main/fw-addr-lists.d/mikrotik";
-#      cert="Root YE"; timeout=1w };
+#      cert="ISRG Root X2:Root YE"; timeout=1w };
 #  };
 };
 :global FwAddrListTimeOut 1d;
diff --git a/global-functions.d/deprecated.rsc b/global-functions.d/deprecated.rsc
index fe492098..b263bebf 100644
--- a/global-functions.d/deprecated.rsc
+++ b/global-functions.d/deprecated.rsc
@@ -3,7 +3,36 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.17
+# requires RouterOS, version=7.21
 #
 # deprecated global functions
 # https://rsc.eworm.de/
+
+:global UrlEncode;
+
+# url encoding
+:set UrlEncode do={
+  :local Input [ :tostr $1 ];
+
+  :if ([ :len $Input ] = 0) do={
+    :return "";
+  }
+
+  :local Return "";
+  :local Chars ("\n\r !\"#\$%&'()*+,:;<=>?@[\\]^`{|}~");
+  :local Subs { "%0A"; "%0D"; "%20"; "%21"; "%22"; "%23"; "%24"; "%25"; "%26"; "%27";
+         "%28"; "%29"; "%2A"; "%2B"; "%2C"; "%3A"; "%3B"; "%3C"; "%3D"; "%3E"; "%3F";
+         "%40"; "%5B"; "%5C"; "%5D"; "%5E"; "%60"; "%7B"; "%7C"; "%7D"; "%7E" };
+
+  :for I from=0 to=([ :len $Input ] - 1) do={
+    :local Char [ :pick $Input $I ];
+    :local Replace [ :find $Chars $Char ];
+
+    :if ([ :typeof $Replace ] = "num") do={
+      :set Char ($Subs->$Replace);
+    }
+    :set Return ($Return . $Char);
+  }
+
+  :return $Return;
+}
diff --git a/global-functions.rsc b/global-functions.rsc
index 30b0ccbc..5cadb24f 100644
--- a/global-functions.rsc
+++ b/global-functions.rsc
@@ -4,7 +4,7 @@
 #                         Michael Gisbers <michael@gisbers.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch, scheduler
 #
 # global functions
@@ -82,7 +82,6 @@
 :global SymbolByUnicodeName;
 :global SymbolForNotification;
 :global Unix2Dos;
-:global UrlEncode;
 :global ValidateSyntax;
 :global VersionToNum;
 :global WaitDefaultRouteReachable;
@@ -132,8 +131,7 @@
   }
 
   :local CertSettings [ /certificate/settings/get ];
-  :if ((($CertSettings->"builtin-trust-anchors") = "trusted" || \
-        ($CertSettings->"builtin-trust-store") ~ $UseFor || \
+  :if ((($CertSettings->"builtin-trust-store") ~ $UseFor || \
         ($CertSettings->"builtin-trust-store") = "all") && \
        [ :len [ /certificate/builtin/find where common-name=$CommonName ] ] > 0) do={
     :return true;
@@ -193,8 +191,7 @@
     :do {
       :local CertSettings [ /certificate/settings/get ];
       :if ([ :len [ /certificate/find where common-name="ISRG Root X1" ] ] = 0 && \
-           !((($CertSettings->"builtin-trust-anchors") = "trusted" || \
-              ($CertSettings->"builtin-trust-store") ~ "fetch" || \
+           !((($CertSettings->"builtin-trust-store") ~ "fetch" || \
               ($CertSettings->"builtin-trust-store") = "all") && \
              [ :len [ /certificate/builtin/find where common-name="ISRG Root X1" ] ] > 0)) do={
         $LogPrint error $0 ("Required certificate is not available.");
@@ -1797,33 +1794,6 @@
   :return [ :tocrlf [ :tostr $1 ] ];
 }
 
-# url encoding
-:set UrlEncode do={
-  :local Input [ :tostr $1 ];
-
-  :if ([ :len $Input ] = 0) do={
-    :return "";
-  }
-
-  :local Return "";
-  :local Chars ("\n\r !\"#\$%&'()*+,:;<=>?@[\\]^`{|}~");
-  :local Subs { "%0A"; "%0D"; "%20"; "%21"; "%22"; "%23"; "%24"; "%25"; "%26"; "%27";
-         "%28"; "%29"; "%2A"; "%2B"; "%2C"; "%3A"; "%3B"; "%3C"; "%3D"; "%3E"; "%3F";
-         "%40"; "%5B"; "%5C"; "%5D"; "%5E"; "%60"; "%7B"; "%7C"; "%7D"; "%7E" };
-
-  :for I from=0 to=([ :len $Input ] - 1) do={
-    :local Char [ :pick $Input $I ];
-    :local Replace [ :find $Chars $Char ];
-
-    :if ([ :typeof $Replace ] = "num") do={
-      :set Char ($Subs->$Replace);
-    }
-    :set Return ($Return . $Char);
-  }
-
-  :return $Return;
-}
-
 # basic syntax validation
 :set ValidateSyntax do={
   :local Code [ :tostr $1 ];
diff --git a/global-wait.rsc b/global-wait.rsc
index a3b9fad9..cfd41f23 100644
--- a/global-wait.rsc
+++ b/global-wait.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2020-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # wait for global-functions to finish
 # https://rsc.eworm.de/doc/global-wait.md
diff --git a/gps-track.rsc b/gps-track.rsc
index ce55c049..b804dd12 100644
--- a/gps-track.rsc
+++ b/gps-track.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch
 #
 # track gps data by sending json data to http server
diff --git a/hotspot-to-wpa-cleanup.capsman.rsc b/hotspot-to-wpa-cleanup.capsman.rsc
index 6f1ed372..952f64e7 100644
--- a/hotspot-to-wpa-cleanup.capsman.rsc
+++ b/hotspot-to-wpa-cleanup.capsman.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=80
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, hotspot
 #
 # manage and clean up private WPA passphrase after hotspot login
diff --git a/hotspot-to-wpa-cleanup.template.rsc b/hotspot-to-wpa-cleanup.template.rsc
index 8986b42d..b6e8e74c 100644
--- a/hotspot-to-wpa-cleanup.template.rsc
+++ b/hotspot-to-wpa-cleanup.template.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=80
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, hotspot
 #
 # manage and clean up private WPA passphrase after hotspot login
diff --git a/hotspot-to-wpa-cleanup.wifi.rsc b/hotspot-to-wpa-cleanup.wifi.rsc
index 8a5a095c..dc053e5e 100644
--- a/hotspot-to-wpa-cleanup.wifi.rsc
+++ b/hotspot-to-wpa-cleanup.wifi.rsc
@@ -4,7 +4,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: dhcpv4-server-lease, order=80
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, hotspot
 #
 # manage and clean up private WPA passphrase after hotspot login
diff --git a/hotspot-to-wpa.capsman.rsc b/hotspot-to-wpa.capsman.rsc
index 60945a1a..f0662706 100644
--- a/hotspot-to-wpa.capsman.rsc
+++ b/hotspot-to-wpa.capsman.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, hotspot
 #
 # add private WPA passphrase after hotspot login
diff --git a/hotspot-to-wpa.template.rsc b/hotspot-to-wpa.template.rsc
index 7c56cc10..03905bd9 100644
--- a/hotspot-to-wpa.template.rsc
+++ b/hotspot-to-wpa.template.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, hotspot
 #
 # add private WPA passphrase after hotspot login
diff --git a/hotspot-to-wpa.wifi.rsc b/hotspot-to-wpa.wifi.rsc
index 68ed4c2e..09c8923a 100644
--- a/hotspot-to-wpa.wifi.rsc
+++ b/hotspot-to-wpa.wifi.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, hotspot
 #
 # add private WPA passphrase after hotspot login
diff --git a/ipsec-to-dns.rsc b/ipsec-to-dns.rsc
index a08405fb..9d730542 100644
--- a/ipsec-to-dns.rsc
+++ b/ipsec-to-dns.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2021-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, ipsec
 #
 # and add/remove/update DNS entries from IPSec mode-config
diff --git a/ipv6-update.rsc b/ipv6-update.rsc
index f93e2786..c7b94fd5 100644
--- a/ipv6-update.rsc
+++ b/ipv6-update.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # provides: dhcpv6-client-lease, order=40
 #
 # update firewall and dns settings on IPv6 prefix change
diff --git a/log-forward.rsc b/log-forward.rsc
index 4d3ac813..766214bc 100644
--- a/log-forward.rsc
+++ b/log-forward.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2020-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # forward log messages via notification
 # https://rsc.eworm.de/doc/log-forward.md
diff --git a/mod/bridge-port-to.rsc b/mod/bridge-port-to.rsc
index d6516ef9..cbc5294f 100644
--- a/mod/bridge-port-to.rsc
+++ b/mod/bridge-port-to.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # reset bridge ports to default bridge
 # https://rsc.eworm.de/doc/mod/bridge-port-to.md
diff --git a/mod/bridge-port-vlan.rsc b/mod/bridge-port-vlan.rsc
index 2f9b40b9..f7d442ef 100644
--- a/mod/bridge-port-vlan.rsc
+++ b/mod/bridge-port-vlan.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # manage VLANs on bridge ports
 # https://rsc.eworm.de/doc/mod/bridge-port-vlan.md
diff --git a/mod/inspectvar.rsc b/mod/inspectvar.rsc
index f4b59fbd..c2e18fc0 100644
--- a/mod/inspectvar.rsc
+++ b/mod/inspectvar.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2020-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # inspect variables
 # https://rsc.eworm.de/doc/mod/inspectvar.md
diff --git a/mod/ipcalc.rsc b/mod/ipcalc.rsc
index 8db9dade..4867273d 100644
--- a/mod/ipcalc.rsc
+++ b/mod/ipcalc.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2020-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # ip address calculation
 # https://rsc.eworm.de/doc/mod/ipcalc.md
diff --git a/mod/notification-email.rsc b/mod/notification-email.rsc
index b6288821..484cb362 100644
--- a/mod/notification-email.rsc
+++ b/mod/notification-email.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, email, scheduler
 #
 # send notifications via e-mail
@@ -92,7 +92,7 @@
     :return false;
   }
 
-  :if (([ /tool/e-mail/get ]->"certificate-verification") ~ "^yes" && \
+  :if ([ /tool/e-mail/get certificate-verification ] ~ "^yes" && \
        [ :len $EmailServerCertificate ] > 0) do={
     :if ([ $CertificateAvailable $EmailServerCertificate "email" ] = false) do={
       $LogPrint warning $0 ("Downloading required certificate failed.");
@@ -105,7 +105,6 @@
 
   :foreach Id,Message in=$EmailQueue do={
     :if ([ :typeof $Message ] = "array" ) do={
-      :while ([ /tool/e-mail/get last-status ] = "in-progress") do={ :delay 1s; }
       :onerror Err {
         :local Attach ({});
         :foreach File in=[ :toarray [ $EitherOr ($Message->"attach") "" ] ] do={
@@ -115,29 +114,15 @@
             $LogPrint warning $0 ("File '" . $File . "' does not exist, can not attach.");
           }
         }
-        :do {
-          /tool/e-mail/send from=[ $EMailGenerateFrom ] to=($Message->"to") \
-              cc=($Message->"cc") subject=($Message->"subject") \
-              body=($Message->"body") file=$Attach;
-        } on-error={ }
-        :local Wait true;
-        :do {
-          :delay 1s;
-          :local Status [ /tool/e-mail/get last-status ];
-          :if ($Status = "succeeded") do={
-            :set ($EmailQueue->$Id);
-            :set Wait false;
-            :if (($Message->"remove-attach") = true) do={
-              :foreach File in=$Attach do={
-                $RmFile $File;
-              }
-            }
+        /tool/e-mail/send from=[ $EMailGenerateFrom ] to=($Message->"to") \
+            cc=($Message->"cc") subject=($Message->"subject") \
+            body=($Message->"body") file=$Attach;
+        :set ($EmailQueue->$Id);
+        :if (($Message->"remove-attach") = true) do={
+          :foreach File in=$Attach do={
+            $RmFile $File;
           }
-          :if ($Status = "failed") do={
-            :set AllDone false;
-            :set Wait false;
-          }
-        } while=($Wait = true);
+        }
       } do={
         $LogPrint warning $0 ("Sending queued mail failed: " . $Err);
         :set AllDone false;
diff --git a/mod/notification-gotify.rsc b/mod/notification-gotify.rsc
index 56face59..a7add06e 100644
--- a/mod/notification-gotify.rsc
+++ b/mod/notification-gotify.rsc
@@ -4,7 +4,7 @@
 #                         Leonardo David Monteiro <leo@cub3.xyz>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch, scheduler
 #
 # send notifications via Gotify (gotify.net)
diff --git a/mod/notification-matrix.rsc b/mod/notification-matrix.rsc
index c737fa34..004ab1f2 100644
--- a/mod/notification-matrix.rsc
+++ b/mod/notification-matrix.rsc
@@ -4,7 +4,7 @@
 #                         Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch, scheduler
 #
 # send notifications via Matrix
@@ -242,7 +242,6 @@
 
   :global FetchUserAgentStr;
   :global LogPrint;
-  :global UrlEncode;
 
   :global MatrixAccessToken;
   :global MatrixHomeServer;
@@ -251,8 +250,8 @@
   :onerror Err {
     /tool/fetch check-certificate=yes-without-crl output=none \
         http-header-field=({ [ $FetchUserAgentStr $0 ] }) http-method=post http-data="" \
-        ("https://" . $MatrixHomeServer . "/_matrix/client/r0/rooms/" . [ $UrlEncode $MatrixRoom ] . \
-        "/join?access_token=" . [ $UrlEncode $MatrixAccessToken ]) as-value;
+        ("https://" . $MatrixHomeServer . "/_matrix/client/r0/rooms/" . [ :convert to=url $MatrixRoom ] . \
+        "/join?access_token=" . [ :convert to=url $MatrixAccessToken ]) as-value;
     $LogPrint debug $0 ("Joined the room.");
   } do={
     $LogPrint error $0 ("Failed joining the room: " . $Err);
diff --git a/mod/notification-ntfy.rsc b/mod/notification-ntfy.rsc
index 6637517f..25156acd 100644
--- a/mod/notification-ntfy.rsc
+++ b/mod/notification-ntfy.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch, scheduler
 #
 # send notifications via Ntfy (ntfy.sh)
@@ -80,7 +80,6 @@
   :global IfThenElse;
   :global LogPrint;
   :global SymbolForNotification;
-  :global UrlEncode;
 
   :local Server [ $EitherOr ($NtfyServerOverride->($Notification->"origin")) $NtfyServer ];
   :local User [ $EitherOr ($NtfyServerUserOverride->($Notification->"origin")) $NtfyServerUser ];
@@ -92,7 +91,7 @@
     :return false;
   }
 
-  :local Url ("https://" . $Server . "/" . [ $UrlEncode $Topic ]);
+  :local Url ("https://" . $Server . "/" . [ :convert to=url $Topic ]);
   :local Headers ({ [ $FetchUserAgentStr ($Notification->"origin") ]; \
     ("Priority: " . [ $IfThenElse ($Notification->"silent") "low" "default" ]); \
     ("Title: " . "[" . $IdentityExtra . $Identity . "] " . ($Notification->"subject")) });
diff --git a/mod/notification-telegram.rsc b/mod/notification-telegram.rsc
index ce9dc3f1..0d0fd6e9 100644
--- a/mod/notification-telegram.rsc
+++ b/mod/notification-telegram.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch, scheduler
 #
 # send notifications via Telegram
@@ -126,7 +126,6 @@
   :global LogPrint;
   :global ProtocolStrip;
   :global SymbolForNotification;
-  :global UrlEncode;
 
   :local EscapeMD do={
     :local Text [ :tostr $1 ];
@@ -203,7 +202,7 @@
     }
     :local Data ([ /tool/fetch check-certificate=yes-without-crl output=user http-method=post \
       ("https://api.telegram.org/bot" . $TokenId . "/sendMessage") \
-      http-data=($HTTPData . "&text=" . [ $UrlEncode $Text ]) as-value ]->"data");
+      http-data=($HTTPData . "&text=" . [ :convert to=url $Text ]) as-value ]->"data");
     :set ($TelegramMessageIDs->[ :tostr ([ :deserialize from=json value=$Data ]->"result"->"message_id") ]) 1;
   } do={
     $LogPrint info $0 ("Failed sending Telegram notification: " . $Err . " - Queuing...");
@@ -215,7 +214,7 @@
       [ $EscapeMD ("This message was queued since _" . [ /system/clock/get date ] . \
       " " . [ /system/clock/get time ] . "_ and may be obsolete.") "plain" "_" ]);
     :set ($TelegramQueue->[ :len $TelegramQueue ]) { tokenid=$TokenId;
-      http-data=($HTTPData . "&text=" . [ $UrlEncode $Text ]) };
+      http-data=($HTTPData . "&text=" . [ :convert to=url $Text ]) };
     :if ([ :len [ /system/scheduler/find where name="_FlushTelegramQueue" ] ] = 0) do={
       /system/scheduler/add name="_FlushTelegramQueue" interval=1m start-time=startup \
         on-event=(":global FlushTelegramQueue; \$FlushTelegramQueue;");
diff --git a/mod/scriptrunonce.rsc b/mod/scriptrunonce.rsc
index 714f2773..3b1de09b 100644
--- a/mod/scriptrunonce.rsc
+++ b/mod/scriptrunonce.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2020-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # download script and run it once
 # https://rsc.eworm.de/doc/mod/scriptrunonce.md
diff --git a/mode-button.rsc b/mode-button.rsc
index 343878d5..f46eaa3c 100644
--- a/mode-button.rsc
+++ b/mode-button.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, scheduler
 #
 # act on multiple mode and reset button presses
diff --git a/netwatch-dns.rsc b/netwatch-dns.rsc
index 7c6a7b5b..ac7ce0ac 100644
--- a/netwatch-dns.rsc
+++ b/netwatch-dns.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2022-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch
 #
 # monitor and manage dns/doh with netwatch
@@ -17,7 +17,6 @@
   :local ScriptName [ :jobname ];
 
   :global CertificateAvailable;
-  :global CharacterReplace;
   :global EitherOr;
   :global IsDNSResolving;
   :global LogPrint;
@@ -104,7 +103,7 @@
   }
 
   :foreach DohServer in=$DohServers do={
-    :foreach DohCert in=[ :toarray [ $CharacterReplace ($DohServer->"doh-cert") ":" "," ] ] do={
+    :foreach DohCert in=[ :toarray delimiter=":" ($DohServer->"doh-cert") ] do={
       :if ([ :len $DohCert ] > 0) do={
         :if ([ $CertificateAvailable $DohCert "fetch" ] = false || \
              [ $CertificateAvailable $DohCert "dns" ] = false) do={
diff --git a/netwatch-notify.rsc b/netwatch-notify.rsc
index d9ab5446..acea2836 100644
--- a/netwatch-notify.rsc
+++ b/netwatch-notify.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2020-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # monitor netwatch and send notifications
 # https://rsc.eworm.de/doc/netwatch-notify.md
diff --git a/ospf-to-leds.rsc b/ospf-to-leds.rsc
index 784fcdd8..bdfc490a 100644
--- a/ospf-to-leds.rsc
+++ b/ospf-to-leds.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2020-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # visualize ospf instance state via leds
 # https://rsc.eworm.de/doc/ospf-to-leds.md
diff --git a/packages-update.rsc b/packages-update.rsc
index 304a3683..922d948b 100644
--- a/packages-update.rsc
+++ b/packages-update.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2019-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, scheduler
 #
 # download packages and reboot for installation
diff --git a/ppp-on-up.rsc b/ppp-on-up.rsc
index 79b83861..43eec680 100644
--- a/ppp-on-up.rsc
+++ b/ppp-on-up.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # run scripts on ppp up
 # https://rsc.eworm.de/doc/ppp-on-up.md
diff --git a/sms-action.rsc b/sms-action.rsc
index 12d4cc20..59c2a459 100644
--- a/sms-action.rsc
+++ b/sms-action.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # run action on received SMS
 # https://rsc.eworm.de/doc/sms-action.md
diff --git a/sms-forward.rsc b/sms-forward.rsc
index 9f3d2558..832bb478 100644
--- a/sms-forward.rsc
+++ b/sms-forward.rsc
@@ -4,7 +4,7 @@
 #                         Anatoly Bubenkov <bubenkoff@gmail.com>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # forward SMS to e-mail
 # https://rsc.eworm.de/doc/sms-forward.md
diff --git a/telegram-chat.rsc b/telegram-chat.rsc
index c0fa5c16..1fa02727 100644
--- a/telegram-chat.rsc
+++ b/telegram-chat.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2023-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch
 #
 # use Telegram to chat with your Router and send commands
diff --git a/unattended-lte-firmware-upgrade.rsc b/unattended-lte-firmware-upgrade.rsc
index c2471a81..22eb4a83 100644
--- a/unattended-lte-firmware-upgrade.rsc
+++ b/unattended-lte-firmware-upgrade.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2018-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, scheduler
 #
 # schedule unattended lte firmware upgrade
diff --git a/update-gre-address.rsc b/update-gre-address.rsc
index b8f0134f..de0e33cf 100644
--- a/update-gre-address.rsc
+++ b/update-gre-address.rsc
@@ -3,7 +3,7 @@
 # Copyright (c) 2013-2026 Christian Hesse <mail@eworm.de>
 # https://rsc.eworm.de/COPYING.md
 #
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 #
 # update gre interface remote address with dynamic address from
 # ipsec remote peer
diff --git a/update-tunnelbroker.rsc b/update-tunnelbroker.rsc
index 215dafa0..d5d1d29a 100644
--- a/update-tunnelbroker.rsc
+++ b/update-tunnelbroker.rsc
@@ -5,7 +5,7 @@
 # https://rsc.eworm.de/COPYING.md
 #
 # provides: ppp-on-up
-# requires RouterOS, version=7.19
+# requires RouterOS, version=7.21
 # requires device-mode, fetch
 #
 # update local address of tunnelbroker interface