Unwanted Table AutoFormat

[dfdixonii]

    
Hello,
I am having an issue with symbols disappearing when placed in front of 
numerical text in my tables while using OpenOffice Writer. In numerous cells, I 
have text reading +0, +1, etc. and anytime I leave a cell containing such text 
it automatically changes to 0, 1, and so on. How do I make the program stop 
doing this? Thank you for your reply.
Daniel Dixon iidfdixo...@yahoo.com