s="alectryon-toggle" id="literate-lean3-lean-chk7" style="display: none" type="checkbox"><label class="alectryon-input" for="literate-lean3-lean-chk7">{</label><small class="alectryon-output"><div><div class="alectryon-goals"><blockquote class="alectryon-goal"><div class="goal-hyps"><span><var>p, q, r</var><span class="hyp-type"><b>: </b><span><span class="kt">Prop</span></span></span></span><br></div><span class="goal-separator"><hr></span><div class="goal-conclusion">p <span class="bp">‚àß</span> q <s