Watching another character

watch <character>

Adds them to your watch list. From then on, whenever they
connect or disconnect, you get a private note - no matter where
either of you are. Aliases: +watch, @watch.

watch

With no target, shows your watch list and who on it is
currently online.

Watching is entirely private: the character you're watching is
never told, shown, or given any way to notice they're on your
list.

Unwatching

unwatch <character>

Takes them off your list.

unwatch

With no target, clears your whole watch list. Aliases:
+unwatch, @unwatch.