Head shape editing....

Are there resources out there to learn about the various headshape .o files and what they do? I was curious what each of the different files affeected in the platyer head model and also if you could mix and match...say a forehead shape (lodd.o<--just an example) with a different mouth or nose shape to create custom head and face configurations?

Has anyone played with this concept or have any insight on the subject?


Thanks

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