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+======Synopsis:======
+[[on]] [<modes>]set [<serial#>] [-|^]<match> { <action> }
+======Description:======
+This hook is triggered whenever a /[[set]] is issued.
+======Parameters:======
+|$0   |name of variable to be set. will be "set-error" if an invalid SET variable was specified                                         |
+|$1-  |value the variable will be set to. will be "No such variable "FOO"", where FOO is the invalid SET variable if $0 is "set-error"  |
+======Examples:======
+To make sure [[set security]] stays on:
+   on ^set "security %" {
+      xecho -b You cannot set SECURITY off!
+      set exec_protection 7
+   }
+To warn of all invalid /SET attempts:
+   on ^set "set-error *" {
+      xecho -b $1-. Please try again
+   }