We need an option to hide the left sidebar as it takes a lot of space from the article. In Wikipedia, you can do this by using a script and pasting it onto your (a user's) CSS page, but there's no way to do this on wiki2 and hence this makes it unusable in my tiny notebook which needs the space so that the article text is centered and no space is taken up by the unnecessary sidebar. A simple button >> and << to toggle the sidebar would do. Thanks.