The built-in form editor cannot deal with TEXT or BYTE columns. However, you can designate an external program that can display or edit a value from a TEXT or BYTE column. To call the external program for any field, put the cursor in that field, and key the exclamation mark (!) character. If an external program has been defined (with the PROGRAM attribute in the form specification), it will be started. In a TEXT field, if no external program is specified in the form, the program that the DBEDIT environment variable names will be started.