Editing System 7 (section)

===Changes===
As intended with the Blue and Pink model, improvements in System 7 are significant but incremental.

* A new Sound Manager [[API]], version 2.0, replaces the older ''[[ad hoc]]'' APIs. The new APIs provided significantly improved [[hardware abstraction]] and higher-quality playback.
* 32-bit [[QuickDraw]], supporting so-called "true color" imaging, is standard; it was previously available as a system extension.
* System 7 allows a 32-bit program address space.  This expanded the memory addressing capabilities from the previous 24-bit address space and increased the system memory limit from 8MB to 4GB.<ref>{{Cite web |date=August 7, 1989 |title=InfoWorld Aug 7, 1989 |url=https://books.google.com/books?id=vDAEAAAAMBAJ&pg=PT69 |url-status=live |archive-url=https://web.archive.org/web/20210602232344/https://books.google.com/books?id=vDAEAAAAMBAJ&pg=PT69 |archive-date=June 2, 2021 |access-date=May 26, 2015}}</ref>
* System 7 makes MultiFinder's [[cooperative multitasking]] mandatory.
* Trash became a normal directory allowing items to be preserved between reboots and disk eject events instead of being purged.
* [[Extension (Mac OS)|System extension]]s are relocated to their own subfolder rather than in the root level of the [[System folder|System Folder]] as in System 6. They can be installed or removed simply by moving these "extensions" to or from the folder and then rebooting the computer. 
* Similarly, the [[Control panel (Mac OS)|Control Panel]] [[desk accessory]] becomes the Control Panels folder. The control panels themselves are separate files stored within this directory.
* Under System 6, the Apple Menu contains both a list of desk accessories and a list of running programs under MultiFinder. In System 7 the list of active programs is relocated to its own Application Menu.
* System 7.1 introduces System Enablers, small extensions that are loaded at startup to support Macintosh models introduced since the last OS revision.<ref>{{Cite web |date=February 18, 2012 |title=System 7.1 through Mac OS 7.6: Compatibility With Macintosh Computers |url=https://support.apple.com/kb/TA47341?locale=en_US&viewlocale=en_US |url-status=live |archive-url=https://web.archive.org/web/20211219222009/https://support.apple.com/kb/TA47341?locale=en_US&viewlocale=en_US |archive-date=December 19, 2021 |access-date=February 9, 2022 |website=support.apple.com}}</ref>
*Cannot run on [[Macintosh 512Ke]].