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<b>let </b><font color="Maroon">a</font> be    <a href="scmfsa_2.html#M1">Int-Location</a> ;<br/><b>let </b><font color="Maroon">b</font> be    <a href="scmfsa_2.html#M1">Int-Location</a> ;<br/>



<b>set </b><font color="Maroon">FNU</font> =  <a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p1">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p2">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span>;<br/>
<b>set </b><font color="Maroon">i0</font> = <span class="p1">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p2">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">a</font>;<br/>
<b>set </b><font color="Maroon">i1</font> = <font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font>;<br/>
<b>set </b><font color="Maroon">i2</font> = <font color="Maroon">b</font> <a href="scmfsa_2.html#K8">:=</a> <span class="p1">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p2">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>;<br/>
<i><font color="Green">E35</font></i>:  <a href="sf_mastr.html#K2">UsedIntLoc</a> <span class="p1">(<span class="default"><a href="scmfsa6c.html#K2">swap</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span> = 
 <a href="sf_mastr.html#K2">UsedIntLoc</a> <span class="p1">(<span class="default"><span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p5">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p0">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">a</font></span>)</span> <a href="scmfsa6a.html#K7">';'</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span> <a href="scmfsa6a.html#K6">';'</a> <span class="p2">(<span class="default"><font color="Maroon">b</font> <a href="scmfsa_2.html#K8">:=</a> <span class="p3">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p4">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="scmfsa6c.html#D4">SCMFSA6C:def 4</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="sf_mastr.html#K2">UsedIntLoc</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p5">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p0">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">a</font></span>)</span> <a href="scmfsa6a.html#K7">';'</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p1">(<span class="default"><a href="sf_mastr.html#K1">UsedIntLoc</a> <span class="p2">(<span class="default"><font color="Maroon">b</font> <a href="scmfsa_2.html#K8">:=</a> <span class="p3">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p4">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span>)</span></span>)</span>
<b>by </b><i><a class="ref" href="sf_mastr.html#T34">SF_MASTR:34</a></i>
<br/>.= 
<span class="p1">(<span class="default"><a href="sf_mastr.html#K2">UsedIntLoc</a> <span class="p2">(<span class="default"><span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p5">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p0">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">a</font></span>)</span> <a href="scmfsa6a.html#K7">';'</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="subset_1.html#K4">\/</a> <span class="p1"><a href="sfmastr1.html#K2" target="_self">{</a><span class="default"><font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span><a href="sfmastr1.html#K2" target="_self">}</a></span>
<b>by </b><i><a class="ref" href="sf_mastr.html#T18">SF_MASTR:18</a></i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="sf_mastr.html#K1">UsedIntLoc</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p5">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p0">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p2">(<span class="default"><a href="sf_mastr.html#K1">UsedIntLoc</a> <span class="p3">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p1"><a href="sfmastr1.html#K2" target="_self">{</a><span class="default"><font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span><a href="sfmastr1.html#K2" target="_self">}</a></span>
<b>by </b><i><a class="ref" href="sf_mastr.html#T35">SF_MASTR:35</a></i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default"><a href="sf_mastr.html#K1">UsedIntLoc</a> <span class="p3">(<span class="default"><span class="p4">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p5">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p0">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">a</font></span>)</span></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p2"><a href="sfmastr1.html#K2" target="_self">{</a><span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font></span><a href="sfmastr1.html#K2" target="_self">}</a></span></span>)</span> <a href="xboole_0.html#K2">\/</a> <span class="p1"><a href="sfmastr1.html#K2" target="_self">{</a><span class="default"><font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span><a href="sfmastr1.html#K2" target="_self">}</a></span>
<b>by </b><i><a class="ref" href="sf_mastr.html#T18">SF_MASTR:18</a></i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2"><a href="sfmastr1.html#K2" target="_self">{</a><span class="default"><span class="p3">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p4">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p5">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>,<font color="Maroon">a</font></span><a href="sfmastr1.html#K2" target="_self">}</a></span> <a href="subset_1.html#K4">\/</a> <span class="p2"><a href="sfmastr1.html#K2" target="_self">{</a><span class="default"><font color="Maroon">a</font>,<font color="Maroon">b</font></span><a href="sfmastr1.html#K2" target="_self">}</a></span></span>)</span> <a href="subset_1.html#K4">\/</a> <span class="p1"><a href="sfmastr1.html#K2" target="_self">{</a><span class="default"><font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span><a href="sfmastr1.html#K2" target="_self">}</a></span>
<b>by </b><i><a class="ref" href="sf_mastr.html#T18">SF_MASTR:18</a></i>
<br/>.= 
<span class="p1"><a href="sfmastr1.html#K4" target="_self">{</a><span class="default"><span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>,<font color="Maroon">a</font>,<font color="Maroon">a</font>,<font color="Maroon">b</font></span><a href="sfmastr1.html#K4" target="_self">}</a></span> <a href="subset_1.html#K4">\/</a> <span class="p1"><a href="sfmastr1.html#K2" target="_self">{</a><span class="default"><font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span><a href="sfmastr1.html#K2" target="_self">}</a></span>
<b>by </b><i><a class="ref" href="enumset1.html#T45">ENUMSET1:45</a></i>
<br/>.= 
<span class="p1"><a href="enumset1.html#K4">{</a><span class="default"><span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span>,<font color="Maroon">a</font>,<font color="Maroon">a</font>,<font color="Maroon">b</font>,<font color="Maroon">b</font>,<span class="p2">(<span class="default"><a href="sf_mastr.html#K6">FirstNotUsed</a> <span class="p3">(<span class="default"><a href="scmfsa6a.html#K2">Macro</a> <span class="p4">(<span class="default"><font color="Maroon">a</font> <a href="scmfsa_2.html#K8">:=</a> <font color="Maroon">b</font></span>)</span></span>)</span></span>)</span></span><a href="enumset1.html#K4">}</a></span>
<b>by </b><i><a class="ref" href="enumset1.html#T54">ENUMSET1:54</a></i>
;<br/>
<b>hence </b><a NAME="E2:50"/>
<font color="Maroon">a</font> <a href="hidden.html#R2">in</a>  <a href="sf_mastr.html#K2">UsedIntLoc</a> <span class="p1">(<span class="default"><a href="scmfsa6c.html#K2">swap</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>
 <b>by </b><i><a class="ref" href="enumset1.html#D4">ENUMSET1:def 4</a></i>;<br/>

<b>thus </b><a NAME="E3:50"/>
<font color="Maroon">b</font> <a href="hidden.html#R2">in</a>  <a href="sf_mastr.html#K2">UsedIntLoc</a> <span class="p1">(<span class="default"><a href="scmfsa6c.html#K2">swap</a> <font color="Maroon">a</font>,<font color="Maroon">b</font></span>)</span>
 <b>by </b><i>, <a class="ref" href="enumset1.html#D4">ENUMSET1:def 4</a></i>;<br/>


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