PROPERTIES

Usage: PROP <nickname|GUID|#channel> <property> <value>

The command takes at least 2 arguments -- an object name, and a property name (or the reserved character '*') -- and returns a variety of numerics.

The object name can be the name of a nickname, the name of a channel or a GUID.

The property name depends on the object type, and the attributes of the object.

Example:
/prop mark language Spanish
/prop #lobby joinmute 5