Enabling Console
From SOPWiki
[edit] Step by Step
First, press the escape key to get to the main menu.
Next, click on . You should now see a window that looks similar to this:
Next, click on the tab that says . The options window should now look like this:
Now, click on the button. You should now see a window that looks like this:
Now check the box. And then press on both windows.
Congratulations, console is now enabled. You can press the ~ key to use it.
[edit] Summary
Go to the main menu. Then, click options. Click the keyboard tab. Click the advanced button. Check the box that says "Enable developer console". Press OK on both windows. Console is now enabled and you can use the ~ key to use it.