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Mac OS X 10.1 (codenamed Puma) is the second release of OS X, an operating system made by Apple Inc. It was released on September 25, 2001 as a free update for Mac OS X 10.0 users. It is the successor to Mac OS X 10.0 "Cheetah" and the predecessor to Mac OS X 10.2 "Jaguar".
Mac OS X 10.1 introduced large performance increases throughout the system. Easier CD and DVD burning and better support for CDs and DVDs in Finder (a file manager) and iTunes (a music and media player). DVDs can also be played in Apple's DVD Player software, and 200 more printers are supported out of the box. The OpenGL framework performs 20% faster. Improvements to the AppleScript scripting interface allows scripting access to more system components such as the Printer Center and Terminal, thereby improving customizability of the interface. An additional software component for developers that was introduced in Mac OS X 10.1 was AppleScript Studio. The Finder file manager was enhanced to optionally hide file extensions on a per-file basis. New software applications were bundled with Mac OS X 10.1, including ColorSync (a new color management system and API) and Image Capture (a software application that allows the uploading of images acquired from digital cameras and scanners.