Forms 4.0 Char Format Mask

As I understand, Oracle does not have character format mask for input and output. So it is difficult, at least for me, to think of an easy way to
implement data types such as phone numbers and social security numbers. I think I might be able to convert them into numbers and mask them. Does anyone have a better idea?

Thanks.

Liang Lin

Internal Medicine Network Service                   llin_at_med.umich.edu
University of Michigan Medical Center              (313) 936-8305