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AManager was any of a set of specialized components of theclassic Mac OSoperating system, including those that comprised theMacintosh Toolbox. Each of these Managers was responsible for handlingsystem calls fromapplications running on theMacintosh, and could be built into theROM or be loaded intoRAM by the system.

Many of these Managers and their functions have been ported to or re-implemented in theCarbonapplication frameworks. Some of the Managers included in various versions of the Mac OS include:

• Code Fragment Manager (CFM)
• Component Manager
• Data Access Manager
• Edition Manager – used by thePublish and Subscribe feature^[1]
• File Manager
• Mixed-Mode Manager
• Resource Manager
• Scrap Manager
• Sound Manager
• Speech Manager
• Window Manager

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