Load a help page.
This procedure loads the specified help page into the helpbrowser or what ever is configured as help viewer. The help page is identified
by its domain and ID: if help_domain is NULL, we use the help_domain which was registered using the gimp_plugin_help_register
procedure. If help_domain is NULL and no help domain was registered, the help domain of the main GIMP installation is used.
| help_domain |
The help domain in which help_id is registered. |
| help_id |
The help page's ID. |
|
TRUE on success. |