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Technical Q&As: Legacy Technologies
As Core Foundation and Mac OS X evolve, the APIs and technologies they encompass change to meet the needs of users and developers. As part of this evolution, less efficient features, interfaces, and programming techniques are deprecated or retired in favor of newer ones. Apple makes these changes only when deemed absolutely necessary. Apple identifies deprecated API in header files and the ADC Reference Library. Availability macros (defined in /usr/include/AvailabilityMacros.h) further help developers find deprecated interfaces in their source code. Comments in header files and corresponding reference documentation provide information about recommended replacements. Legacy documents help developers understand legacy technologies, identify replacements, and update their products to run on current Apple platforms.

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PCI Throughput Issues (HTML)
DV20.
Unsupported 1995-09-15