Dry Line Mini - Liquid Paper is the greatest to use to cover up text and correct mistakes with out the old fashion Liquid white out. You do not have to wait several minutes before it dries to make the correction. Once you place the dry line over the text that requires correction you can write on it immediately. So when you make a copy the text will look clean. I can remember using the liquid white out and the mess it use to make if it was not dry enough before writing on it, this make it a little easier to get the job done and look great.
But don't do what my daughter did she tried to change her days missed at school on her report card and put it back in the mail box acting like it just arrived. Usually I just glance at her report card because her grades are always good, but due to the fact that I was an Executive Assistant something did not look right. I put the paper to the window and saw the real number of days she missed school. Let's say that never happened again.