[[Category:Operating System]]
[[Image:DES.gif|thumb|320px|Screenshot of ''Desktop Environment System'']]
* [http://www.kjthacker.f2s.com/docs/desprog.pdf ''Desktop Environment System'' Programmer's Guide] (PDF file)
* [http://www.cpcwiki.eu/imgs/0/04/Desprog.pdf ''Desktop Environment System'' Programmer's Guide] (PDF file - local mirror)
[[Category:Operating System]]