This is an example of using the keyboard strokes a player can type during the game to type something on an ingame dialog without using player chat.
// This sample code is public domain and can be used by anyone with no restrictions
// If you use this and want to give me credit that would be great
// Coded by RodOfNOD, Thanks to casperb, rrowland from #sc2mapster
// Known issues: Enter key is a pain and cannot be turned off, however....
// if you choose the game options and pick hotkeys and switch the game to FOR leftiies
// then the TAB key becomes the ENTER key and you can hit enter all you want.
// BTW no units were harmed in the making of this map, and isn't that what is really important?