Index: openacs-4/packages/acs-core-docs/www/psgml-mode.html =================================================================== RCS file: /usr/local/cvsroot/openacs-4/packages/acs-core-docs/www/psgml-mode.html,v diff -u -r1.51.2.3 -r1.51.2.4 --- openacs-4/packages/acs-core-docs/www/psgml-mode.html 27 Jun 2019 18:22:22 -0000 1.51.2.3 +++ openacs-4/packages/acs-core-docs/www/psgml-mode.html 3 Sep 2021 09:15:25 -0000 1.51.2.4 @@ -64,7 +64,7 @@ (define-key sgml-mode-map "\C-c\C-x\C-t" 'sgml-describe-entity)

What is a DOCTYPE ?

All SGML and XML documents that should conform to a DTD have to declare a -doctype. For the docbook XML, all your .xml files whould start with +doctype. For the docbook XML, all your .xml files would start with the line

       <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "docbookx.dtd">