E-Commerce Configuration Guide : Site Configuration Settings : Guest Related Settings : DefAddress
 
DefAddress
Key value:
Numeric values: 1, 10, 20 or 30
Description:
Specifies the default address to be used for guest lookup, creation and editing (1 = Mailing, 10 = Shipping, 20 = Billing, 30 = Local).
See also:
GuestEditRows
ForceEditFields
ExistingGuestHideRows
GuestDispRows
ShipAddress