[/sblock]The party has already done a short course in hand signals, so a "shush" is easy to have added to that list. They were "all clear", "move out", "stop", "Freeze", "Get Down", "Get Up", "Danger Area", "Enemy in Sight", "Prepare for action"]

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.