The first thing you need to know is that in ASSAULT-OPS there are 2 chat systems:
Server Chat - this is the Chat located on the server (you see it on the left when you log in)
Battle Chat - this is the Chat visible in the battle (while you are playing, you can use this Chat by pressing Enter).
How to send messages in Chat?
In the Server Chat:
Message to all players - write your message, then click the Send button, or press Enter.
Message to a specific player, for example to me - Left-click on FederalBureauFBI (if you see me somewhere in the Chat), click 'Write in Chat', then write your message, or hold down the 'Ctrl' key, left click on FederalBureauFBI, then write your message or write FederalBureauFBI:(space) and then your message.
In the Battle Chat:
Message to all players - press Enter to open the Chat, then write your message, then press Enter again.
Message to your team only (in TDM, CTF, CP) - press T, then write your message, then Enter, or press Ctrl+Enter, then write your message, then Enter.
Note: If you've broken any of the Game Rules and you've been banned, you won't be able to use the Chats for a specific period of time.
Remember that to execute any command, you have to write it in the Chat and press Enter.
How to complain about a player during the battle? (Works in Battle Chat only)
When you execute this command, you sill see a green text saying 'The complaint was successfully sent'.
Once you execute it, nothing will happen immediately. But if 25% of the other players in the battle + you execute it , the battle will be highlited for the Chat Moderators - they will be alerted.
Then they will check the battle, and will decide what to do.
How to use the block (ignore)-function? List of commands.
Remember that block (ignore) ≠ ban.
When executing the block commands, you will just ignore the player - you will not see his messages. But he will not be banned, and his messages will be visible to the others.
/block name - This command stops messages from a player (name). Works in Server and Battle Chat.
/unblock name - This command unblocks messages from a player (name). Works in Server and Battle Chat.
/blocklist - This command shows your active Blocklist. Works in Server Chat only.
/unblockall - This command clears your Blocklist. Works in Server Chat only.
How to send links to Assault-Ops pages in the Server Chat? List of commands.
#forum - Go to Forum
#rules - Go to Rules
#faq - Go to FAQ
#ranks - Go to Ranks
#clans - Go to Clans
#theft - Go to What to do if your account has been stolen
#updates - Go to Patch Notes / Updates
#plans - Go to In Development
#feedback - Go to Assault-Ops Feedback
#wiki - Go to Encyclopedia of Game
#news - Go to News page
There are also other Chat commands, available only for control Staff members - Moderators/Consultants/Administrators.