DS CWA 16374-64:2012 Extensions For Financial Services (Xfs) Interface Specification Release 3.20 - Part 64: Cash Dispenser Device Class Interface Migration From Version 3.10 (Cwa 15748) To Version 3.20 (This Cwa) Programmer's Reference Explains the functionality of an XFS compliant Cash Dispenser Module (CDM) Service Provider. Also defines the service-specific commands that can be issued to the Service Provider using the WFSGetInfo,