Console Window

The console window, or debug console, is StarCraft II's method for showing errors and debugging maps. To open it, use the tilde (~) key, which is just to the left of the 1 key. The currently known commands for it are:

1. clear : Clear the console
2. dump : Dump object members
3. eval : Eval an expression
4. help : Display this help
5. set : Set a variable
6. show : Show a variable

Simple enter the command and press enter. To close the debug console, just hit ~ again.

Credits

[1]DarkBlizz forums, for finding out the information originally.