Define an alternate ID for a registered Area.
An alternate ID can be used in all places that accept an Area ID, like the
DiviArea.show() function. Internally, the plugin maps the alternate ID to the real Area ID.
- (string, required) The original Area ID; set to
nullto remove the
altIdagain from the list of alternative IDs.
- (string, required) The alternate ID.
The function does not return anything.