Accessing the Level Editor (by Matan)
For Windows Users:
1) Press ~ to bring up the console
2) Type in $testcheats=1; and press enter
3) Press ~
4) Enter a level
5) Press F11
For Mac Users:
1) Press F10 to bring up the console
2) Type in $testcheats=1; and press enter
3) Press F10
4) Enter a level
5) Press F11
Small Note - if using PowerBook:
1) Hold fn while pressing F10
2) Press F11