. . . . . a sports club runs a popular summer program. Over the years this has become increasingly complex. Registration has been done via a paper form which is filled in and then mailed to the club. Increasingly, the complexity of the program has meant that the forms are being returned with invalid options checked which causes problems for those running the program.

. . . . .the entire registration form was moved online. Registration now requires selecting program choices from a screen and only valid options are displayed.... see the solution