Victory and Defeat dialog box?

What determines the contents of the victory & defeat dialog boxes?

In Melee, it might say
Continue
Quit Mission

In most maps by default, it says something like (off the top)
Continue
Restart
Reduce difficulty
Quit

In dota maps, it just says Continue, and Quit. But when you click Continue, it quits ANWAY.

So what controls all that? And how would you have it, so it just says "QUIT".

Thanks....

It gives you different options depending on if you're playing single or multiplayer.

You can make it say just "Quit" by making your own dialog box with your own dialog button, and manually triggering the defeat. The same is true for the Victory dialog.