Operating System
An Operating System is the primary program which is used to control a computer. MS-DOS, Windows, ReactOS, Linux, FreeBSD and UCSD Pascal are all operating systems which run on standard PCs.
Other operating systems that are supported by Lazarus / Free Pascal include Android, iOS and macOS.
See also
From the Free Pascal wiki, page "Operating System", as it stood on 2019-12-22 after a change by Trev, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's Licensing page. If you have concerns about this material, message the admin.