Keymap() sets or clears a temporary keymap.
If one parameter is specified, it is taken as the name of a temporary keymap, which is added to the current keymap. If there are any entries in the temporary keymap that overlap entries in the current keymap, those entries will be overridden by the entries in the temporary keymap.
If no parameters are specified, any existing temporary keymap will be removed.
TemporaryKeymap() is an alias for Keymap.