UMODE2

The UMODE2 command is used to set or get user modes for the client's own nickname.

User Mode Change

Usage: UMODE2 {[+|-][modes]}
{[+|-][modes]} A string of mode characters to set (+) or unset (-).

This command is equivalent to using the MODE command with the client's own nickname as the target. It allows the client to modify their own user modes.