The current release of OLE Programmer's Guide examines the architecture and capabilities of OLE as a whole, as well as of each of its core facilities: COM, structured storage, and uniform data transfer. A separate chapter is devoted to compound documents, the technology that inspired the original development of OLE and laid the groundwork for its evolution into a systemwide, object-based service architecture. A subsequent release of the OLE Programmer's Guide will include detailed instructions for developing both OLE client and server applications for compound documents that work under both Microsoft® Windows NT® and Microsoft® Windows® 95. For descriptions of specific interfaces, helper functions, data structures, and enumerations, refer to the OLE Programmer's Reference. For information on Automation and developing OLE controls, see the Automation Programmer's Guide and Reference.