Originally posted by nanoukmetal:
1)after having posted a reply then if I wanted to re-edit and add something above that famous first line: the only I can do it now is to deleted everything and write anew. Is there a better way ?
I'm not sure I follow you. When you are editing your own post by selecting the little folder/eraser icon from the lower right corner of the window, you will get your entire post in a window just like when you originally posted it. There should be a scroll bar on the right (just to the right of the white area where you type) and if you push the arrow up or down you can scroll to any part of your post and insert or change text.

If that is not what you're talking about then please try again with a different example of what you are trying to do.