================================================================================
XML Model
================================================================================

<?xml version="1.0"?>
<?xml-model href="http://www.docbook.org/xml/5.0/rng/docbook.rng"?>
<?xml-model href="http://www.docbook.org/xml/5.0/xsd/docbook.xsd"?>
<book xmlns="http://docbook.org/ns/docbook">
 …
</book>

--------------------------------------------------------------------------------

(document
  (prolog
    (XMLDecl
      (VersionNum))
    (XmlModelPI
      (PseudoAtt
        (Name)
        (PseudoAttValue)))
    (XmlModelPI
      (PseudoAtt
        (Name)
        (PseudoAttValue))))
  (element
    (STag
      (Name)
      (Attribute
        (Name)
        (AttValue)))
    (content
      (CharData))
    (ETag
      (Name))))

================================================================================
XML Stylesheet
================================================================================

<?xml-stylesheet href="common.css"?>
<?xml-stylesheet href="default.css" title="Default style"?>
<?xml-stylesheet alternate="yes" href="alt.css" title="Alternative style"?>
<?xml-stylesheet href="single-col.css" media="all and (max-width: 30em)"?>
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>Example with xml-stylesheet processing instructions</title>
 </head>
 <body>
  ...
 </body>
</html>

--------------------------------------------------------------------------------

(document
  (prolog
    (StyleSheetPI
      (PseudoAtt
        (Name)
        (PseudoAttValue)))
    (StyleSheetPI
      (PseudoAtt
        (Name)
        (PseudoAttValue))
      (PseudoAtt
        (Name)
        (PseudoAttValue)))
    (StyleSheetPI
      (PseudoAtt
        (Name)
        (PseudoAttValue))
      (PseudoAtt
        (Name)
        (PseudoAttValue))
      (PseudoAtt
        (Name)
        (PseudoAttValue)))
    (StyleSheetPI
      (PseudoAtt
        (Name)
        (PseudoAttValue))
      (PseudoAtt
        (Name)
        (PseudoAttValue))))
  (element
    (STag
      (Name)
      (Attribute
        (Name)
        (AttValue)))
    (content
      (CharData)
      (element
        (STag
          (Name))
        (content
          (CharData)
          (element
            (STag
              (Name))
            (content
              (CharData))
            (ETag
              (Name)))
          (CharData))
        (ETag
          (Name)))
      (CharData)
      (element
        (STag
          (Name))
        (content
          (CharData))
        (ETag
          (Name)))
      (CharData))
    (ETag
      (Name))))
