The official GemStone IV encyclopedia.
SHAKE is a roleplaying verb. It is also a mechanical verb. It has usage with select flora and certain scripted items.
You give Person a firm handshake. You receive a firm handshake from Person.
You shake your head. Person shakes her head.
Shake head person: You look at Person and shake your head. Person looks over at you and shakes her head.
>shake tree You powerfully shake the tree, but can't quite get anything to fall from it. Roundtime: 6 sec.