Title macro from the American Law Style, as a worked example from a production environment

amlaw-title-macro.xml

<macro name="amlaw-title">
  <choose>
    <if>
      <conditions match="all">
        <condition type="book song motion_picture" match="any"/>
        <condition variable="title version" match="all"/>
        <condition disambiguate="true" position="first" match="any"/>
        <condition is-numeric="version" match="all"/>
      </conditions>
      <group delimiter=", ">
        <text form="short" text-case="title" variable="title"/>
        <group delimiter=" ">
          <text value="ver."/>
          <text variable="version"/>
        </group>
        <text form="short" variable="medium"/>
      </group>
    </if>
    <else-if>
      <conditions match="all">
        <condition type="book song motion_picture" match="any"/>
        <condition variable="title version" match="all"/>
        <condition disambiguate="true" position="first" match="any"/>
        <condition is-numeric="version" match="none"/>
      </conditions>
      <group delimiter=", ">
        <text form="short" text-case="title" variable="title"/>
        <text quotes="true" variable="version"/>
        <text form="short" variable="medium"/>
      </group>
    </else-if>
    <else-if>
      <conditions match="all">
        <condition type="book song motion_picture" match="any"/>
        <condition variable="title version" match="all"/>
      </conditions>
      <choose>
        <if>
          <conditions match="any">
            <condition position="first" disambiguate="true" match="any"/>
            <condition variable="author container-author" match="none"/>
          </conditions>
          <text form="short" text-case="title" variable="title"/>
        </if>
      </choose>
    </else-if>
    <else-if>
      <conditions match="all">
        <condition type="book song motion_picture" match="any"/>
        <condition variable="title version" match="nand"/>
        <condition variable="container-title" match="none"/>
        <condition type="song" variable="collection-title" match="nand"/> 
      </conditions>
      <choose>
        <if position="subsequent" disambiguate="true" variable="title-short" match="all">
          <text font-variant="small-caps" form="short" text-case="title" variable="title-short"/>
        </if>
        <else-if>
          <conditions match="all">
            <condition position="subsequent" match="any"/>
            <condition variable="author composer" match="none"/>
          </conditions>
          <text font-variant="small-caps" form="short" text-case="title" variable="title-short"/>
        </else-if>
        <else-if>
          <conditions match="any">
            <condition position="first" match="any"/>
            <condition disambiguate="true" match="any"/>
            <condition variable="author composer" match="none"/>
          </conditions>
          <text font-variant="small-caps" form="short" text-case="title" variable="title"/>
        </else-if>
      </choose>
    </else-if>
    <else-if>
      <conditions match="any">
        <condition type="song" variable="collection-title" match="all"/>
        <condition type="song" variable="container-title composer" match="all"/>
        <condition type="song" variable="container-title author" match="all"/>
      </conditions>
      <choose>
        <if>
          <conditions match="any">
            <condition position="first" disambiguate="true" match="any"/>
            <condition variable="author" match="none"/>
          </conditions>
          <group delimiter=" ">
            <text font-style="italic" form="short" text-case="title" variable="title"/>
            <names prefix="[" suffix="]" variable="composer">
              <name form="short" initialize-with="."/>
            </names>
          </group>
        </if>
      </choose>
    </else-if>
    <else-if type="book song motion_picture" match="any">
      <choose>
        <if>
          <conditions match="any">
            <condition position="first" disambiguate="true" match="any"/>
          </conditions>
          <text font-variant="small-caps" form="short" text-case="title" variable="title"/>
        </if>
      </choose>
    </else-if>
    <else-if>
      <conditions match="any">
        <condition type="broadcast" variable="container-title publisher" match="all"/>
        <condition type="video" variable="container-title publisher" match="all"/>
      </conditions>
      <group delimiter=": " font-style="italic">
        <text form="short" text-case="title" variable="container-title"/>
        <text form="short" text-case="title" variable="title"/>
      </group>
    </else-if>
    <else-if>
      <conditions match="any">
        <condition type="video" variable="container-title URL" match="all"/>
        <condition type="post" variable="container-title URL" match="all"/>
        <condition type="post-weblog" variable="container-title URL" match="all"/>
        <condition type="webpage" variable="container-title URL" match="all"/>
      </conditions>
      <choose>
        <if position="first" disambiguate="true" match="any">
          <text font-style="italic" form="short" variable="title"/>
        </if>
      </choose>
    </else-if>
    <else-if>
      <conditions match="any">
        <condition type="song" variable="collection-title" match="all"/>
        <condition type="broadcast" variable="container-title" match="all"/>
        <condition type="video" variable="container-title" match="all"/>
        <condition type="post" variable="container-title" match="all"/>
        <condition type="post-weblog" variable="container-title" match="all"/>
        <condition type="webpage" variable="container-title" match="all"/>
        <condition type="paper-conference" variable="container-title" match="all"/>
        <condition type="article-magazine graphic article-journal article-newspaper chapter" match="any"/>
        <condition type="entry-encyclopedia"/>
        <condition type="entry-dictionary"/>
      </conditions>
      <choose>
        <if>
          <conditions match="any">
            <condition position="first" disambiguate="true" match="any"/>
            <condition variable="author container-author" match="none"/>
          </conditions>
          <text font-style="italic" form="short" text-case="title" variable="title"/>
        </if>
      </choose>
    </else-if>
    <else-if>
      <conditions match="any">
        <condition type="video" variable="URL" match="all"/>
        <condition type="post" variable="URL" match="all"/>
        <condition type="post-weblog" variable="URL" match="all"/>
        <condition type="webpage" variable="URL" match="all"/>
      </conditions>
      <text form="short" variable="title"/>
    </else-if>
    <else-if type="legal_case">
      <choose>
        <if position="first">
          <text form="short" variable="title"/>
        </if>
        <else-if variable="title-short">
          <text form="short" font-style="italic" variable="title-short"/>
        </else-if>
        <else>
          <text form="short" font-style="italic" variable="title"/>
        </else>
      </choose>
    </else-if>
    <else>
      <choose>
        <if>
          <conditions match="any">
            <condition position="first" disambiguate="true" match="any"/>
            <condition variable="author container-author" match="none"/> 
         </conditions>
          <text form="short" text-case="title" variable="title"/>
        </if>
      </choose>
    </else>
  </choose>
</macro>