<li><i>ship_fax</i>
<li>payby - CARD, DCHK, CHEK, DCHK, LECB, BILL, or COMP
<li>payinfo - card number, P.O.#, or comp issuer
+ <li>paycvv - Card Verification Value, "CVV2" (also known as CVC2 or CID), the 3 or 4 digit number on the back (or front, for American Express) of the credit card
<li>paydate - expiration date
<li>payname - billing name (name on card)
<li>tax - tax exempt, Y or null