Scroll down the list of available tools until you see Sven Co-op Dedicated. The Sven Co-op team has also provided you with a autoexec.cfg, it contains aliases and some other default settings for Sven Co-op.
They can still change your settings for the session, but they won't be written to disk, so once you restart your game you will be back to normal.
Heads-up! As a part of this new lineup, some of your favorite content may have moved to a new or existing channel built around similar content. Please see below to find out what's moved! THIS CONTENT HAS MOVED. In the main Steam screen hover over Library and click Tools. Remember, go to the properties of config.cfg, make it read only.