Returns an array of all plug-in names for plug-ins that are enabled.
Return value: plug-in array as object
Type: Array of Strings
If a plug-in has instance information, then the instance name is appended to the plug-in name, with a colon (:) separating them. It should therefore be noted that this procedure may return the same plug-in name multiple times if there are multiple instances of that plug-in loaded.