> Hazel is also known for his typesetting software, in particular "Philip's Music Writer",[5][6] as well as programs to turn a simple markup into a subset of DocBook XML for use in the Exim manual, and to produce PostScript from this XML.
* https://en.wikipedia.org/wiki/Philip_Hazel
* https://en.wikipedia.org/wiki/Philip%27s_Music_Writer
> Hazel is also known for his typesetting software, in particular "Philip's Music Writer",[5][6] as well as programs to turn a simple markup into a subset of DocBook XML for use in the Exim manual, and to produce PostScript from this XML.
* https://en.wikipedia.org/wiki/Philip_Hazel
* https://en.wikipedia.org/wiki/Philip%27s_Music_Writer