Hello, sorry for late post. It was not in Viewing mode. So I exclude that. Wasnt save it, because when you save, you can give undo, in my case was not possible to undo, redo, ctl z, etc. And also not select all, because when select all, text became all selected, and was not my case. I have tried to replicate this problem as experiment, but not succesed like it was in my situation. It was not deleted, because if you delete some text, you still able to use all options from home, insert, design, view, etc. I have not check de size, I let the document as it was, but closed. i really want to know what happend and what kind of keys combination did I pressed, to know how to prevent in the futhure