Fires when any component calls launchHelp
Listen to this event in a custom frame if you
want to supply your own help system. If a listener exists for this event, the listener is responsible to launch
help pages; the Frame API will not launch them.
helprequested : (String token)
- token – The context-sensitive token to pass to the help system. If this
parameter is null or empty, help should be launched to the table of contents.
See launchHelp for possible values.