Schemas

“The source for documentation.”

DocBook is a family of XML vocabularies:

DocBook

The primary schema, ideally suited for technical documents about computer software and hardware.

Publishers

A customization designed for publishing non-technical documents.

Simplified

A customization that reduces DocBook down to about 100 elements.

Historically, there have been other semi-official customizations.

Website

A customization designed for building websites. Obsoleted largely by extensions to the standard DocBook tag set and by improvements to build tooling that make it easy to construct a website from ordinary DocBook documents.

Slides

A customization designed for writing slides. Obsoleted largely for the same reasons as the website customization.

Forms

A web-focused customization for that includes HTML form elements. An experimental vocabulary that never really got any traction.