;
; all - All event classes below (including any we may have missed).
; system - General information about the system and ability to run system
-; management commands, such as Shutdown, Restart, and Reload.
+; management commands, such as Shutdown, Restart, and Reload. This
+; class also includes dialplan manipulation actions such as
+; DialplanExtensionAdd and DialplanExtensionRemove.
; call - Information about channels and ability to set information in a
; running channel.
; log - Logging information. Read-only. (Defined but not yet used.)