Write !commands in guild chat.
Guild commands with parameters: !disband, !invite[name], !leave, !kick[name], !revoke[name], !demote[name], !promote[name], !passleadership[name], !nick[name, nick], !setrankname[oldName, newName], !setmotd[text] and !cleanmotd.
setmotd doesn't work, you and the guild members do not see the motd when opening the guild channel.
