Then, type one of the following ' map ' codes and press to load the corresponding map. Enter ' bind p toggleconsole' as a console command. Start the game, and the console window should appear at the main menu. In the General tab, select 'Set Launch Options', enter ' -console' in that field, and accept it.
At the Steam control panel, Right Click the 'Left 4 Dead 2' option, and select 'Properties' under the 'My Games' tab.
