WriteConsole
From the Scripting Manual
procedure WriteConsole(ID: Byte; Text: string; Colour: LongInt); Parameter Info: ID (Byte): Player ID to write text to. Set to 0 to write to all players! Text (string): Text to be written to the console. Colour (LongInt): Colour the text should be when drawn to the console. Description: This function will add text to the players(ID) console. Set ID to 0 to write the text to ALL Players in the server!
Examples
begin
WriteConsole(0, 'Pickled Onions are nice!', $EE81FAA1);
// Will draw: "Pickled Onions are nice!" to ALL players consoles.
// $EE81FAA1 is the colour, in AA RR GG BB format. (Alpha, Red, Green,Blue);
end;