Thread:Project:Support desk/How do I get rid of the vertical blue line?

On many pages of this wiki http://www.protocasedesigner.com/wiki/index.php/Quick_Start there is a vertical blue line running down the left side of the page. I am pretty sure it is a line that shows changes that were made, but I have looked through the help and other user aids and cannot find anything about how to get rid of it! Can anyone help?