LDIF/LDAP schema for Address Book

Hi, Thanks to ph for assistance in getting my LDAP server and Address Book talking. Now I'd like to get all the Address Book fields stored in the LDAP server, problem is I can't find any information on the LDIF/LDAP schema supported by Address Book and a whole chunk of it's fields don't seem to be supported by 'Workgroup Manager'. I've looked in the 'Open Directory Administration' PDF and it gives some details, but no more than the fields supported by Workgroup Manager. Anyone have a reference for a definitive schema? Tony Williams