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   3      </p><div class="variablelist"><dl class="variablelist"><dt><span class="term">Synopsis:</span></dt><dd><p><span class="bold"><strong>suppose</strong></span> <span class="emphasis"><em><a class="link" href="sec_terms.html#grammar.term">term</a></em></span> <span class="bold"><strong> (</strong></span> <span class="emphasis"><em><a class="link" href="sec_terms.html#grammar.id">id</a></em></span>
   4              <span class="bold"><strong>) </strong></span></p></dd><dt><span class="term">Pre-condition:</span></dt><dd><p>
   5             The conclusion of the sequent to prove must be an implication.
   6        </p></dd><dt><span class="term">Action:</span></dt><dd><p>
   7             It applies the right introduction rule for the implication, closing the current sequent (in Natural Deduction this corresponds to the introduction rule for the implication).
   8         </p></dd><dt><span class="term">New sequents to prove:</span></dt><dd><p>
   9                 It opens a new sequent to prove the consequent of the implication adding the antecedent <span class="command"><strong>A</strong></span> to the hypotheses. The name of the new hypothesis is <span class="command"><strong>H</strong></span>.
  10         </p></dd></dl></div><p>
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