System 5

Beginning with System File version 4.2, Apple began bundling software in release bundles, instead of as independent System, Finder, and device support files as they had done for all previous versions.
In October 1987, Apple released System Software 5.0, a software bundle which included System 4.2, Finder version 6.0, MultiFinder 1.0 and LaserWriter version 5.0. 
System Software 5.1, released in November 1987, included System 4.3, Finder version 6.0, MultiFinder 1.0 and LaserWriter version 5.1.
No version of the System file was ever numbered "version 5".
==Refer to==
* System 4.2
* System 4.3
==See also==
* System file
* Finder
==External links==
* System version numbering history at The Mac 512 (archived 2006-12-11)
*Mac System Software 5.x at BetaWiki
Category:System 4
Category:1987 introductions
Category:Discontinued Apple software