xpr$.html" title="See companion object">FreeExpr</a><span class="permalink"><a href="../../provingground/translation/FreeExpr.html" title="Permalink"><i class="material-icons"></i></a></span></h1><h3><span class="morelinks"><div>Companion <a href="FreeExpr$.html" title="See companion object">object FreeExpr</a></div></span></h3></div><h4 id="signature" class="signature"><span class="modifier_kind"><span class="modifier">sealed </span> <span class="kind">trait</span></span> <span class="symbol"><span clas