API Notes for the CoreGraphics framework
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* ``CGColorSpaceCreateWithPlatformColorSpace``,
  ``CGColorSpaceCreateWithPlatformColorSpace``.

  These functions are not supported.

* The functions and data-types for parsing PDF documents (such 
  as ``CGPDFStreamCreateWithStream``) are for the most part unsupported
  at the moment. We have bindings for a subsection of the APIs, but haven't
  those aren't complete nor fully tested.

*  ``CGWaitForScreenUpdateRects``, ``CGWaitForScreenRefreshRects``

   This functions are not yet supported.