ctly with the whole relation.
        </p>
<p>
          The next diagram shows the layout of the relation and pairs of a bimap.
          It is the one from the <span class="emphasis"><em>one minute tutorial</em></span>
        </p>
<p>
          <span class="inlinemediaobject"><img src="../../images/bimap/relation.and.pair.png" alt="relation.and.pair"></span>
        </p>
<p>
          Bimap pairs are signature-compatible with standard pairs but are different
          from them. As you will see in other 