If you mean "How do you logout of the Twine Forums" then you need to click on the Clog Icon to the right of your username and select the Sign Out option.
(Your username appears just above the "New Discussion" button, at least it does on a desktop monitor)
Comments
(Your username appears just above the "New Discussion" button, at least it does on a desktop monitor)
Also, it's a "cog", not a "clog".