Command Modules are a mechanism for extending command sets without adding new objects to a user's command heirarchy. Command Module objects must be a child of $user_interfaces. Commands on a Command Module must use sender() instead of this() to reference the user (as remote commands do).
To add a Command Module, type:
@set command-modules=+$command_module
Where $command_module is the Object Name of the Command Module you are adding. You remove Command Modules in a similar manner, using the dash (-) character instead of the plus (+) character.
Command Cache | Command Modules