Editing Nroff (section)

==Variants==
There is also a [[free software]] version of nroff in the [[Groff (software)|groff]] package emulating the AT&T version,<ref>{{cite web |url=https://man7.org/linux/man-pages/man1/nroff.1.html |title=nroff(1) |website=Linux manual pages}}</ref> widely used by Unix-like operating systems.<ref>{{cite web |url=https://man7.org/linux/man-pages/man7/roff.7.html |title=roff(7) |website=Linux manual pages |quote=Unix-like operating systems often distribute a roff system... The GNU roff—groff is arguably the most widespread roff implementation.}}</ref>

The [[Minix]] operating system, among others, uses a clone of nroff called [[cawf]] by Vic Abell, based on awf, the Amazingly Workable Formatter designed in [[awk]] by [[Henry Spencer]]. These are not full replacements for the nroff/troff suite of tools, but are sufficient for display and printing of basic documents and [[manual page]]s.

In addition, a simplified version of nroff is available in [[Ratfor]] source code form as an example in the book ''Software Tools'' by [[Brian Kernighan]] and [[P. J. Plauger]].<ref>{{Cite web|url=https://9p.io/cm/cs/who/bwk/toolsbook/|title = Software Tools Code}}</ref>