prolog:help_hook(+Action)Hook into help/0
and help/1.
If the hook succeeds, the built-in actions are not executed. For
example, ?- help(picture). is caught by the XPCE help hook
to give help on the class picture. Defined actions are:
- help
- User entered plain help/0
to give default help. The default performs
help(help/1),
giving help on help.
- help(What)
- Hook in help/1
on the topic What.
- apropos(What)
- Hook in apropos/1
on the topic What.