Required
Description: You can now require for certain fields in your form to be filled in before the user can successfully submit the form. Simply place all field names that you want to be mandatory into this field. If the required fields are not filled in, the user will be notified of what they need to fill in, and a link back to the form they just submitted will be provided. To use a customized error page, see 'missing_fields_redirect'
Syntax: If you want to require that they
fill in the email and phone fields in your form, so that you can reach them once you have
received the mail, use a syntax like:
<input type=hidden
name="required" value="email,phone">