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   4       </p><div class="variablelist"><dl><dt><span class="term">Pre-conditions:</span></dt><dd><p>The conclusion of the sequent to prove must be an implication
   5              or a universal quantification.</p></dd><dt><span class="term">Action:</span></dt><dd><p>It applies the right introduction rule for implication,
   6              closing the current sequent.</p></dd><dt><span class="term">New sequents to prove:</span></dt><dd><p>It opens a new sequent to prove adding to the hypothesis
   7              the antecedent of the implication and setting the conclusion
   8              to the consequent of the implicaiton. The name of the new
   9              hypothesis is <span><strong class="command">H</strong></span> if provided; otherwise it
  10              is automatically generated.</p></dd></dl></div><p>
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