Editing Markup language (section)

===troff and nroff===
{{Main|troff}}
Some early examples of computer markup languages available outside the publishing industry can be found in typesetting tools on [[Unix]] systems such as [[troff]] and [[nroff]]. In these systems, formatting commands were inserted into the document text so that typesetting software could format the text according to the editor's specifications. It was a [[trial and error]] iterative process to get a document printed correctly.<ref>Daniel Gilly. [http://web.deu.edu.tr/doc/oreily/unix/unixnut/ch12_01.htm ''Unix in a nutshell: Chapter 12. Groff and Troff''] {{Webarchive|url=https://web.archive.org/web/20160105180006/http://web.deu.edu.tr/doc/oreily/unix/unixnut/ch12_01.htm |date=2016-01-05 }}. O'Reilly Books, 1992. {{ISBN|1-56592-001-5}}</ref> Availability of [[WYSIWYG]] ("what you see is what you get") publishing software supplanted much use of these languages among casual users, though serious publishing work still uses markup to specify the non-visual structure of texts, and WYSIWYG editors now usually save documents in a markup-language-based format.