Column numbers back to letters

[Helen]

Hi
For some reason my columns have changes from letters to
numbers, while my rows are still numbers. I want to
change my columns back to letters. Please help.
Thanks

 

[Debra Dalgleish]

That's one of the questions in the Excel FAQs, found here:

http://www.contextures.com/xlfaqApp.html#HeaderNumber

To change the columns back to letters,
Choose Tools > Options and select the General tab.
Remove the check mark from 'R1C1 reference style'