Not sure I exactly understand your question. But I'll explain the bottomprint function.
commandtoclient(%client,'bottomprint',"Your message here!",3);
We'll start off with the start of the function, the commandtoclient . What that does is send information to the client, and the clients job is to display it. Next is the %client . Which ever client object has been selected, will be the one to receive the bottomprint. 'bottomprint' tells the player which function to do. And "Your message here!" . Obviously this would be your message to be displayed. And that last little number at the end, that would be how long the message would appear for. You can leave it as -1 to stay forever. (until they receive their next bottomprint).
Hope this helped.