DTD Tutorial

<table width="100%"><tr><td><span class="mediumText"><b>>> English <<</b> | <a class="naviBlack" target="_top" href="../Output_cze/example5.html">česky</a> | <a class="naviBlack" target="_top" href="../Output_spa/example5.html">Español</a> | <a class="naviBlack" target="_top" href="../Output_rus/example5.html">По-русски</a> | <a class="naviBlack" target="_top" href="../Output_fre/example5.html">Français</a> | <a class="naviBlack" target="_top" href="../Output_ita/example5.html">Italiano</a> | <a class="naviBlack" target="_top" href="../Output_ger/example5.html">Deutsch</a> | <a class="naviBlack" target="_top" href="../Output_hun/example5.html">Magyar</a></span></td><td style="text-align:right"><span class="mediumText"><a class="naviBlack" target="_top" href="../../../index.html">thebigdir</a> > <a class="naviBlack" target="_top" href="../../../index12db.html?nav_id=tutorials">Tutorials</a> > <b>DTD Tutorial</b></span></td></tr></table><table class="bar" width="750px" border="0" cellpadding="0" cellspacing="0"><tr><td class="naviBlue"><a class="naviWhite" target="_top" href="../General/book.html">Intro</a> / <a class="naviWhite" target="_top" href="http://thebigdir.com/search.php">Search</a> / <a class="naviWhite" target="_top" href="../../../index.html"> home loan mortgage equity refinancing calculator lender rates</a></td></tr></table><table class="hangingMenu" border="0" cellpadding="1" cellspacing="0" width="100%"><tr><td><b>>> Example 5 <<</b> | <a class="naviBlack" href="example4.html">Prev</a> | <a class="naviBlack" href="example6.html">Next</a> | <a class="naviBlack" href="../General/contents.html">Contents</a></td></tr></table><br/><h3>Description</h3><hr/><div class="description">If an element name in DTD is followed by the question mark [?], this element can occur zero or one times.</div><br/><h3>DTD</h3><hr/><br/><div class="docDescription">The root element <span class="element">XXX</span> can contain one element <span class="element">AAA</span> followed by precisely one element <span class="element">BBB</span>. Element <span class="element">BBB</span> must be always present.: </div><table width="90%" cellpadding="15"><tr><td class="doc"><br /><!ELEMENT XXX (AAA? , BBB)><br /><!ELEMENT AAA (#PCDATA)><br /><!ELEMENT BBB (#PCDATA)><br /></td></tr></table><br/><h3>Valid documents<sup><a href="#">Top</a></sup></h3><hr/><br/><div class="docDescription">A valid document: </div><table width="90%" cellpadding="15"><tr><td class="doc"><br /> <!DOCTYPE XXX SYSTEM "tutorial.dtd"><br/><br /><XXX> <AAA/> <BBB/> </XXX><br /></td></tr></table><br/><div class="docDescription">Element <span class="element">AAA</span> is not mandatory: </div><table width="90%" cellpadding="15"><tr><td class="doc"><br /> <!DOCTYPE XXX SYSTEM "tutorial.dtd"><br/><br /><XXX> <BBB/> </XXX><br /></td></tr></table><br/><h3>Documents with errors<sup><a href="#">Top</a></sup></h3><hr/><br/><div class="docDescription">Element <span class="element">BBB</span> is missing: </div><table width="90%" cellpadding="15"><tr><td class="doc"><br /> <!DOCTYPE XXX SYSTEM "tutorial.dtd"><br/><br /><XXX> <span class="error">___</span> </XXX><br /></td></tr></table><br/><div class="docDescription">Maximaly one <span class="element">AAA</span> element can occur inside the document: </div><table width="90%" cellpadding="15"><tr><td class="doc"><br /> <!DOCTYPE XXX SYSTEM "tutorial.dtd"><br/><br /><XXX> <AAA/> <AAA/> <AAA/> <AAA/> <AAA/> <AAA/> <AAA/> <BBB/> </XXX><br /></td></tr></table><br/><div class="docDescription">Element <span class="element">BBB</span> must follow element <span class="element">AAA</span>: </div><table width="90%" cellpadding="15"><tr><td class="doc"><br /> <!DOCTYPE XXX SYSTEM "tutorial.dtd"><br/><br /><XXX> <span class="error"><BBB/></span> <AAA/> </XXX><br /></td></tr></table><br/><p> </p> <p><a href="http://www.quiksilversurfcamps.com">Quiksilver Surf Camps and Surf School</a></p> <p><a href="http://www.roxysurfcamps.com">Roxy Surf Camps and Surf School</a></p> <p> </p>