Editing Mac OS X Tiger (section)

==Improvements==
* An upgraded [[Kernel (operating system)|kernel]] with optimized kernel resource locking and [[access control list]]s, and with support for [[64-bit]] [[user space|userland]] [[address space]]s on machines with 64-bit processors.<ref name=64bit>{{cite web|url=https://arstechnica.com/reviews/os/macosx-10-4.ars/4|title=Mac OS X 10.4 Tiger|page=4|author=John Siracusa|date=April 28, 2005|work=ArsTechnica.com|access-date=February 25, 2007}}</ref>
* An updated libSystem with both 32-bit and 64-bit versions; combined with the aforementioned kernel change, this allows individual applications to address more than 4&nbsp;GB of memory when run on 64-bit processors, although an application using Apple libraries or frameworks other than libSystem would need to have two processes, one running the 64-bit code and one running the code that requires other libraries and frameworks.<ref name=64bit/><ref>{{cite web|url=https://developer.apple.com/macosx/64bit.html|title=Developing 64-bit applications|author=Apple|date=March 6, 2006|work=Apple Developer Connection|access-date=March 5, 2007|archive-url=https://web.archive.org/web/20070925075950/https://developer.apple.com/macosx/64bit.html|archive-date=September 25, 2007}}</ref>
* A new startup [[daemon (computer software)|daemon]] called [[launchd]] that allows for faster booting.
* The printing dialog in Tiger now features a drop down menu for creating [[PDF]]s, sending PDFs to Mail, and other PDF related actions. However, the user interface was criticized for creating a hybrid [[graphical widget|UI element]] that looks like a plain button but acts like a pop-up menu. This is one of only three places in the entire Mac OS X interface where such an element appears.{{Citation needed|date=July 2017}}
* Dock menus now have menu items to open an application at login, or to remove the icon from the dock.
* The Window menu in the Finder now features a "Cycle Through Windows" menu item.
* The Get Info window for items in the Finder now includes a "More Info" section that includes Spotlight information tags such as Image Height & Width, when the file was last opened, and where the file originated.
* Early development of resolution independence. Apple notes that this will be a user-level feature in a future version of Mac OS X.<ref>{{cite web|url=https://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI|title=Resolution Independent UI|publisher=Apple Developer Connection|access-date=July 10, 2006|archive-date=December 26, 2008|archive-url=https://web.archive.org/web/20081226013325/http://developer.apple.com/releasenotes/GraphicsImaging/RN-ResolutionIndependentUI/|url-status=live}}</ref> Among the changes, the maximum size of icons was increased to 256x256. However, the Finder does not yet support this size.

===Technologies===
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* '''Core Image''': A graphics processing API that allows programmers to leverage programmable GPUs for fast image processing for special effects and image correction tools. Some of the included Image Units are Blur, Color Blending, Generator Filters, Distortion Filters, Geometry Filters, and Halftone features.
* '''Core Data''': A data persistence API that makes it easier for developers to handle structured data in their applications. Core Data provides undo, redo, and save functions for developers without them having to write any code.
* '''Core Video''': A video graphics API that leverages Core Image to provide real-time video processing. Apple's Motion real-time video effects program takes advantage of Core Video in Tiger. Core Video lets developers easily integrate real-time video effects and processing into their applications.
* '''Core Audio''': Integrates a range of audio functionality directly into the operating system.

In addition to these APIs, Tiger introduces a new window theme, often described as 'Unified'. A variation on the standard, non-brushed metal theme used since the introduction of Mac OS X, this theme integrates the title bar and the toolbar of a window. A prominent example of an application that utilizes this theme is Mail.

Tiger is also the first version of Mac OS X to include the "Zoom" screen magnifier functionality.