【66-70】
Microsoft’s COM is a software （66） that allows applications to be built from binary software components. COM is the underlying architecture that forms the foundation for higher-level software services， like those provided by OLE. COM defines a binary standard for function calling between components， a way for components to dynamically discover the interfaces implemented by other components， and a mechanism to identify components and their interfaces uniquely. OLE is a compound （67） standard developed by Microsoft. OLE makes it possible to create （68） with one application and link or embed them in a second application. Embedded objects retain their original format and （69） to the application that created them. Support for OLE is built into the Windows and MacOS Operating Systems. A （70） compound document standard developed mainly by Apple and IBM is called OpenDoc.
