said: I am writing a mathematical document and need to write the character x bar (ie the letter x with a bar over the top perhaps an 'overscore'). x bar is of course the mean of a sample. In my old mainframe / line printer days we use to have character overprinting and just would have printed an x and overprinted a bar. How can I do this in Word. I have looked at all the Word symbols and what I want is not obvious.