<entry role="func_table_entry"><para role="func_signature">
        <type>seg</type> <literal>&lt;&lt;</literal> <type>seg</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Is the first <type>seg</type> entirely to the left of the second?
        [a, b] &lt;&lt; [c, d] is true if b &lt; c.
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>seg</type> <literal>&gt;&gt;</literal> <type>seg</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Is the first <type>seg</type> entirely to the right of the second?
        [a, b] &gt;&gt; [c, d] is true if a &gt; d.
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>seg</type> <literal>&amp;&lt;</literal> <type>seg</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Does the first <type>seg</type> not extend to the right of the
        second?
        [a, b] &amp;&lt; [c, d] is true if b &lt;= d.
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>seg</type> <literal>&amp;&gt;</literal> <type>seg</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Does the first <type>seg</type> not extend to the left of the
        second?
        [a, b] &amp;&gt; [c, d] is true if a &gt;= c.
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>seg</type> <literal>=</literal> <type>seg</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Are the two <type>seg</type>s equal?
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>seg</type> <literal>&amp;&amp;</literal> <type>seg</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Do the two <type>seg</type>s overlap?
       </para></entry>
      </row>

      <row>
       <entry role="func_table_entry"><para role="func_signature">
        <type>seg</type> <literal>@&gt;</literal> <type>seg</type>
        <returnvalue>boolean</returnvalue>
       </para>
       <para>
        Does the first <type>seg</type> contain the second?