Hi Jo,

That is a square root sign. ?
Hold down Alt, type 251 (on the number pad) then let go of Alt

It doesn't work in all fonts but it should work
in most of the regular fonts.

Of course what actually constitutes a *regular* font is
debatable but for my money it is ones like Arial, Times New Roman,
Verdana, Courier etc.

HTH
Martin


"Jo taylor" <Jo wrote in message
...
I saw a document with ? in a cell. What do I need to do to recreate this
symble or where can I find out how to use it?