anchor.diff:  
   ==== Index Term
   
  -*Legacy DB element*: <indexterm>
   
   *HTML element*: <a>
   
  
positive.code: 
  ==== Preface
  
  *Legacy DB element*: <preface>
  
  *HTML element*: <section>
  
  *Special semantics*: +class="preface"+, class="foreword" or class="introduction", depending on content
  
  *Example*
  
  ----
  <section class="preface">
    <!-- h1 used for all preface titles -->
    <h1 class="title">Preface Title</h1>
    <!-- Lots of preface content here -->
  </section>
  ----
  
  ==== Backmatter
  
  *Legacy DB element*: <colophon>
  
  *HTML element*: <section>
  
  *Special semantics*: +class="colophon"+, +class="acknowledgments"+, +class="afterword"+, +class="conclusion"+
  
  *Example*
  
  ----
  <section class="colophon">
    <!-- optional h1 used for colophon titles -->
    <h1 class="title">Colophon Title</h1>
    <!-- Lots of colophon content here -->
  </section>
  ----
  
  ==== Part
  
  *Legacy DB element*: <part>
  
  *HTML element*: <div>
  
  *Special semantics*: +class="part"+ 
  
  *Example*
  
  ----
  <div class="part">
    <!-- h1 used for all part titles -->
    <h1 class="title">Part Title</h1>
    <!-- Lots of part content here -->
  </div>
  ----
  
  ==== Dedication
  
  *Legacy DB element*: <dedication>
  
  *HTML element*: <section>
  
  *Special semantics*: +class="dedication"+ 
  
  *Example*
  
  ----
  <section class="dedication">
    <!-- optional h1 used for dedication titles -->
    <h1 class="title">Dedication Title</h1>
    <p>I owe it all to Project Unicorn</p>
  </section>
  ----
  
  ==== Index
  
  *Legacy DB element*: <index>
  
  *HTML element*: <section>
  
  *Special semantics*: +class="index"+ on <section>; class="indexdiv" on each term grouping; class="indexentry" on each indexentry; class="indexentry xref" on index hyperlinksfootnote:[Only "index" is from EPUB3 Structural Semantics Vocabulary; all the rest are DocBook semantics]
  
  // OPEN QUESTION: Not entirely sold on using a definition list to mark up index sections; yes, it provides a built-in mechanism for doing the necessary indentation for subentries, but shoehorning in the index results in icky empty <dd>s in places and semantically it's a bad fit. Wondering why not use an <ol> or <ul> instead? Either way, we'd suppress the markers in CSS (for Mobi, we'd need to transform to <div>/<blockquote> markup--sigh)
  
  // MAYBE, ADD ANOTHER EXAMPLE USING <ol>
  
  // OPEN QUESTION 2: What class to use on index hyperlinks? I'm not in love with "indexentry xref", but I wanted a way to indicate that it was an XREF and that it was in an indexentry
  
  // OPEN QUESTION 3: Special semantics for entry level (primary, secondary, tertiary)?
  
  *Example*
  
  ----
  <section class="index">
    <!-- optional h1 used for index titles -->
    <h1 class="title">Index Title</h1>
    <div class="indexdiv">
      <h2 class="title">A</h2>
      <dl>
        <dt class="indexentry">Aardvark, <a class="indexentry xref" href="ch01#aardvark">All about Aardvark</a></dt>
        <dd>
  	<dl>
             <dt class="indexentry">precursor to Atlas, <a class="indexentry xref" href="ch01#atlasagain">Precursors to Atlas</a></dt>
             <dd></dd>
           </dl>
        </dd>
        <dt class="indexentry">Atlas, <a class="indexentry xref" href="ch01#atlas">All about Atlas</a>
        <dd></dd>
       </dl>
    </div>
  </section>
  ----
  
  ==== Title Page
  
  *Legacy DB element*: No directly corresponding element; titlepage section is autogenerated from book metadata
  
  *HTML element*: <section>
  
  *Special semantics*: +class="titlepage"+ 
  
  *Example*
  
  ----
  <section class="titlepage">
    <!-- h1 used for book title -->
    <h1 class="title">Book Title</h1>
    <!-- Whatever else goes on the title page: publishername, logo, etc. -->
  </section>
  ----
  
  ==== Copyright Page
  
  *Legacy DB element*: No directly corresponding element; copyright page section is autogenerated from book metadata
  
  *HTML element*: <section>
  
  *Special semantics*: +class="copyright-page"+ 
  
  *Example*
  
  ----
  <section class="copyright-page">
    <!-- Standard copyright page info marked up in headings, <div>s, <p>s, and lists -->
  </section>
  ----
  
  ==== Table of Contents
  
  *Legacy DB element*: <toc> (which we never use, because we autogenerate our TOCs)
  
  *HTML element*: <nav>
  
  *Special semantics*: +class="toc"+ (epub:type="toc" must be added for EPUB 3 output, if not in source)
  
  *Note*: The TOC should be conformant to the specs for the EPUB3 Navigation document (i.e., an <ol> within a <nav>)
  
  *Example*
  
  ----
  <nav class="toc" epub:type="toc">
    <h1 class="title">Table of Contents</h1>
     <ol>
       <li><a href="examples_page.html">A Note Regarding Supplemental Files</a></li>
       <li><a href="pr02.html">Foreword</a></li>
  
negative.code: 
  ==== Sidebar
  
  
  *HTML element*: <aside>
  
  