Sets various optional documentation strings on this:
* blurb is used for instance as the this's tooltip when represented in the UI such as a
menu entry, or in "Search Actions" widget under the main procedure's label. * help is a free-form text that's meant as
additional documentation for developers of scripts and plug-ins. If the blurb and the argument names and descriptions are
enough for a quite self-explanatory procedure, you may set help to null, rather than
setting an uninformative help (avoid setting the same text as blurb or redundant information).
Plug-ins are responsible for their own translations. You are expected to send localized strings of blurb and help
to GIMP if your plug-in is internationalized.
| this |
A Procedure. |
| blurb |
The this's blurb. |
| help |
The this's help text. |
| help_id |
The this's help ID. |