mh-set-help

mh-set-help is an autoloaded Lisp function in `mh-utils.el'.

(mh-set-help MESSAGES &optional DEFAULT)

Set help messages.

The MESSAGES are assumed to be an associative array. It is used
to show help for the most common commands in the current mode.
The key is a prefix char. The value is one or more strings which
are concatenated together and displayed in a help buffer if ? is
pressed after the prefix character. The special key nil is used
to display the non-prefixed commands.

The substitutions described in `substitute-command-keys' are performed as
well.

If optional argument DEFAULT is non-nil, then these messages will
be used if help is asked for an unknown mode.