"Familiar, yes?" I believe they can be used with the various "spawnscript", "usescript", "awakescript", "angerscript", "attackscript", "victoryscript", "lostenemyscript", "painscript", "fleescript", "delayedscript", "blockedscript", "ffirescript", "ffdeathscript", "mindtrickscript", or perhaps a selection of these. Haven't really tested them, but as the description says, they're used to activate behaviors instead of scripts, that generally are started and executed on NPCs with these strings.