linkdead
A player with a (Linkdead) flag has temporarily lost connection to the mud. If you send a tell to such a person, it will be stored in a buffer until s/he returns, as long as they return before they auto-quit. Auto-quit happens if the person stays linkdead for long enough. S/he will disappear out of this plane, and sit in limbo for awhile, and then eventually ... will be completely .. out of this world.