These applications are not required, but can make working on the documentation easier or add capabilities.
A popular editor for working with XML and derived documents, like DocBook XML.
Both of these editors include a special mode for editing documents marked up according to an XML DTD. This mode includes commands to reduce the amount of typing needed, and help reduce the possibility of errors.
All FreeBSD documents are available for download at https://download.freebsd.org/ftp/doc/
Questions that are not answered by the
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Send questions about this document to <freebsd-doc@FreeBSD.org>.