All commands (except private messaging) are of the form /commandname names-or-objects: they start with a (forward) slash as the first character, then, without any spaces, comes which command it is, and then the things it operates on.
For example, /find mrpuzzle.
In this case, the commandname is find, and mrpuzzle is the player you wish to locate.
All the slash-commands work similarly.
To keep things simple, you only need to remember one of them /help, which brings up a panel listing and describing all the commands. A few of them you can click right there to launch.
After that, you can edit it and re-submit, or if you wish, Revoke it by clicking the button labeled Revoke. After doing that, if there is time you can still submit a new entry.
When you successfully have submitted your entry, your hear a "click" sound, and an arrow icon appears on the screen. Also, the submission box dims, but if you start typing, it returns to full brightness.
The game checks that the entry matches the given letters with each character typed. When all the letters turn green, the entry is acceptable.
If the timer expires, but your entry matches the letters, it will be submitted for you automatically.
At the 10-seconds-left mark, if no entry has been sent, a ticking clock sound lasting about one second is heard.
Being in a non-playing state allows you to remain in a room, without holding things up (if you get a phone call, say, or are otherwise diverted).
NOTE: If a player misses two consecutive, complete rounds (acro-vote-acro-vote or vote-acro-vote-acro), non-playing state is set automatically. The action can be reversed as just described above.
All acros and their associated votes and bonus points are then written in a popup window which appears. Use your browser's "File → Save As" function to preserve it in a file. To avoid accidentally losing that record (when you log off, for example), you have to close it explicitly.
This is the only one which doesn't start with a slash: it starts with an @.
You type @playername yourmessage, with no spaces around the @.
You can get the @playername set up for you by:
Blocking only covers chat - the players acros will still appear on voting lists and the results.
It is possible to clear out the chat box entirely with /clear or by clicking the eraser icon .
In extreme cases, the player who created the room can remove someone from it entirely using /boot. It also prevents the troublemaker from returning. The action can be reversed using /unboot.
This powerful command should be used sparingly - only when someone is there to cause trouble, and not over some slight disagreement or indiscretion.
The owner of the room (the person who created it) can also issue a /pause command, which will pause the game after the current round completes. In that case, that same player is the only one who can resume it.
Within a game /who lists all players in all rooms in a popup display, and /games shows all the games.
Alternatively, you can click one of these icons: (/who) (/games).
The command /lobby lists all players waiting in the lobby, and NOT in a playing room.
To locate an individual player, /find will tell you in which room they are.