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<b>take </b>
 <a href="subset_1.html#K1">{}</a> <font color="Maroon">S</font>
;<br/>

<b>thus </b><a NAME="E1:11_1_1"/>
 <a href="subset_1.html#K1">{}</a> <font color="Maroon">S</font> <a href="hidden.html#NR2" target="_self">&lt;&gt;</a>  <a href="setfam_1.html#K5">union</a> <span class="p1">(<span class="default"><a href="pcomps_1.html#K1">bool</a> <font color="Maroon">S</font></span>)</span>
 <b>by </b><i><a class="ref" href="zfmisc_1.html#T99">ZFMISC_1:99</a></i>; <i><font color="Red">:: according to </font></i><a class="ref" href="tex_2.html#D2" target="_self">TEX_2:def 2</a><br/>


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