some basic GM commands:
/setspeed xxx = Walk speed of the character
/invisible = Invisible
/invincible = Invincible
/wire = Silkroad in Wire mode
/hwanmode 1 = Berserker like 1=Red Zerk, 2=Blue Zerk, 3=Fire Zerk
/snow xxx =It snow's
/rain xxx =It rain's
/day =Turns to a Lovley Sunny day
/night...