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Leopard Release Notes: Graphics & Imaging
Quartz technologies are at the heart of the Mac OS X graphics and windowing environment. Quartz 2D is a two-dimensional drawing API that leverages the Portable Document Format (PDF) drawing model and allows developers to to achieve many of the visual effects used in the Mac OS X user interface, including translucency and drop shadows. Quartz Composer is a development tool for processing and rendering graphical data. PDF Kit allows applications to display and manipulate PDF documents. Core Image and Core Video support, respectively, image processing and video image manipulation. Quartz also provides low-level system services such as window buffering and composition, event handling and dispatch, display management, and text rendering.

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2D Graphics Release Notes for Mac OS X v10.5 (HTML)
Describes the changes and issues related to Core Image and Quartz 2D in Mac OS X v10.5.
2008-04-08
Quartz Composer Release Note for Mac OS X v10.5 (HTML)
Summarizes the features and changes in Quartz Composer for Mac OS X v10.5.
2007-10-31
Quartz Core Reference Update (HTML) (PDF)
Summarizes the symbols added to the Quartz Core framework.
2007-07-18
Quartz Reference Update (HTML) (PDF)
Summarizes the symbols added to the Quartz framework.
2007-07-18
Core Animation Release Notes (HTML)
Describes features, issues, and workarounds related to Mac OS X v10.5 and its support of Core Animation.
2007-05-31
Resolution Independent UI Release Notes (HTML)
2005-04-29