Yousfi - with your style of programming, you seem to write everything in .prg files. In that, the 'editor' works fine. I use the form designer, and add code to the methods. That editor seems different from the one to work on .prg files. When you click on the scrollbar to move it, it jumps away from the mouse pointer, and the code also jumps from where you were looking at it, and you lose your place. Yes, you can use up and down arrows, but when you want to move perhaps a page or so up or down, just clicking on the scrollbar makes it jump the page up or down, with no controlling it. You can click on it, but then you have to try to find your place again, and it is extremely irritating. Try it - you will see what I mean.