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If you are new to xml, regard an xml file as 'source code'. You don't
-read it directly, but use it to create other formats (like the txt and html
-included in ../txtdocs and ../htmldocs).
+read it directly, but use it to create other formats (like the html
+included in ../htmldocs).
Docbook is a particular XML style, particularly suited to producing
technical manuals.