Use the following emote commands in the chat window:
/agree
/laugh
/attention
/beckon
/beg
/boo
/bored
/bow
/bowhead
/catchbreath
/cheer
/clap
/congrats
/cough
/dance
/doh
/doubletake
/fistshake
/help
/jump
/kneel
/moan
/no
/pickme
/point
/ponder
/pout
/ready
/roar
/shoo
/salute
/sorry
/scratch
/sigh
/taunt
/wave
/yawn
/yes