Adding numbers

[Mike McKenzie]

My appologizes to the programers here, but as I am not, my questions will be
of the "dumb" variety. I wish I had a printed manual so I could try to find
the answers off-line. Anyway here's my question:

How do I perform a math function (like add, subtract, etc.) on the number
input into a text field and then display the result in another textfield?
(Just your basic spreadsheet)

Also how do I restrict the input to only numbers?


Michael McKenzie
Director of Advertising
Ruby-Gordon Inc.