Error checking on text formatting
I would like to do some error checking on text that was entered in a field (ideally this would be done in a calculation field). The toy example I am playing around with is to verify that there is an "@" in an email address field. If there is, then I would like to set a calculation field to true, since I will then consider the email address valid.
Could I please get some advice on how to go about doing this?
Thanks for your time!