reference:scripting_reference:scripting_events:onaboutscript

The OnAboutScript event can be implemented by a script add-in to display an "about" dialog to the user. It is triggered when the user clicks the About button for a script on the Script Management dialog.

Method Name: OnAboutScript

Argument Type:

AboutData 

Return Type:

none

Description:

The usual implementation for this event would use the AboutData.window parameter to display a dialog using the Dialog object.