[This is preliminary documentation and subject to change.]
Color Management Modules (CMMs) are modules of ICM code that use the information in device profiles to do color conversion and color mapping. Application developers should not have to implement CMMs. Microsoft provides the default CMM. However, if you do write software that requires the use of specialized color conversion and color mapping algorithms, you may create one.
Note CMM entry points are not API functions and should not be called by applications.