After you have enabled debug mode there are a number of hot keys to bring up new menus and edit things on the map.

CTRL + w: brings up the world editor.
SHIFT + [: decreases a units strength that your mouse is over by 0.2.
SHIFT + ]: increases a units strength that your mouse is over by 0.2.
CTRL + 4: increases your gold by 1000.
CTRL + d: brings up the debug menu.