THE POPULOUS BIBLE
I.39 Chatting in game
To chat when inside a match, press the letter "m". ("M" stands for message).
The chat is limited to a number of characters, and the message will be displayed with your tribe's colour, and with your nickname before the message.
You can send public messages (for everyone), which is default, or private messages. If you want to message only Red, for instance, make sure only the red square is check. If you want the message to be public, check all the squares, or simply click on the multicolour square.
In this image you can see a 4 player's game. The yellow player is sending a public message (you can see the multicolour icon selected). Also, the yellow player has received a message from the green player (pinkwarrior is his nick). Yellow does not know if the message green sent is public or private.