Oxygen XML Author plugin 13.2.0

Chapter15The XHTML Document TypeThe Extensible HyperText Markup Language, or XHTML, is a markup languagethat has the same depth of expression as HTML, but also conforms to XMLsyntax.A file is considered to be a XHTML document when the root element name isa html.The schema used for these documents is located in${frameworks}/xhtml/dtd/xhtml1-strict.dtd, where${frameworks} is a subdirectory of the Oxygen XML Author plugin installdirectory.The default CSS options for the XHTML document type are set to merge theCSSs specified in the document with the CSSs defined in the XHTML documenttype.The CSS file used for rendering XHTML content is located in${frameworks}/xhtml/css/xhtml.css.There are three default catalogs for XHTML document type:• ${frameworks}/xhtml/dtd/xhtmlcatalog.xml• ${frameworks}/xhtml11/dtd/xhtmlcatalog.xml• ${frameworks}/xhtml11/schema/xhtmlcatalog.xml