--- loncom/xml/physnet.sty	2004/01/20 16:24:59	1.35
+++ loncom/xml/physnet.sty	2004/01/21 13:04:08	1.36
@@ -122,30 +122,29 @@
    </render>
 </definetag>
 
+<definetag name="nothing">
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+    <render><comment></comment></render>
+</definetag>
+
 
 <definetag name = "revhist" parms = "revision">
    <meta><output><revision display="Revision History">$revision</meta>
-   <render>
-      <web></web>
-      <tex></tex>
-   </render>
+   <render><nothing /></render>
 </definetag>
 
 
 <definetag name = "/revhist">
    <meta></revision></output>
    </meta>
-   <render>
-      <web></web>
-      <tex></tex>
-   </render>
+   <render><nothing /></render>
 </definetag>
 
 
 <definetag name = "defIdItems" parms="module">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\setcounter{bookpage}{\value{page}}
            \setlength{\headwidth}{\textwidth} 
          \lhead{\textit{ID Sheet: MISN-0-$module}}
@@ -157,7 +156,7 @@
 <definetag name = "/defIdItems">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\end{IdItems} </tex>
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 </definetag>
@@ -166,7 +165,7 @@
 <definetag name = "defContents">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\newpage\setlength{\headwidth}{\textwidth} 
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@@ -175,10 +174,7 @@
 
 <definetag name = "/defContents">
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing /></render>
 </definetag>
 
 
@@ -203,7 +199,7 @@
 <definetag name = "smallskip">
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    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\smallskip </tex> 
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 </definetag>
@@ -211,26 +207,20 @@
 
 <definetag name = "/smallskip">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex> 
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "inits">
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-   <render>
-      <web></web>
-      <tex></tex> 
-  </render>
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 </definetag>
 
 
 <definetag name = "/inits">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\,</tex>
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 </definetag>
@@ -247,10 +237,7 @@
 
 <definetag name = "/OneInchAnswer">
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-   <render>
-      <web></web>
-      <tex></tex>
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 </definetag>
 
 
@@ -265,53 +252,40 @@
 
 <definetag name = "/percent">
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-   <render>
-      <web></web>
-      <tex></tex>
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+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "bigskip">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
+   <render><nothing/></render>
   </render>
 </definetag>
 
 
 <definetag name = "/bigskip">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
+   <render><nothing/></render>
   </render>
 </definetag>
 
 
 <definetag name = "Footnote">
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/Footnote">
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "sbox" parms="name">
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    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\sbox{$name}{</tex>
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 </definetag>
@@ -320,7 +294,7 @@
 <definetag name = "/sbox">
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    <render>
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+      <web><nothing/></web>
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 </definetag>
@@ -329,7 +303,7 @@
 <definetag name = "newsavebox" parms="name">
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    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\newsavebox{$name}</tex>
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 </definetag>
@@ -337,52 +311,37 @@
 
 <definetag name = "/newsavebox">
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-   <render>
-      <web></web>
-      <tex></tex>
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+   <render><nothing/></render>
 </definetag>
 
 <definetag name = "footnote">
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/footnote">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "footnotetext">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/footnotetext">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "indent">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\indent </tex>
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@@ -390,28 +349,19 @@
 
 <definetag name = "/indent">
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "hidden" parms="arg">
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/hidden">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -526,7 +476,7 @@
 <definetag name = "setlength">
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    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\setlength </tex>
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@@ -534,10 +484,7 @@
 
 <definetag name = "/setlength">
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -580,7 +527,7 @@
 <definetag name = "addtolength">
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    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\addtolength </tex>
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@@ -588,10 +535,7 @@
 
 <definetag name = "/addtolength">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -626,7 +570,7 @@
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    <render>
       <web><br /><br /></web>
-      <tex></tex>
+      <tex><nothing/></tex>
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@@ -642,17 +586,14 @@
 
 <definetag name = "/IdHours">  
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "Sect" parms = "module">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\newpage\setcounter{bookpage}{\value{page}} 
            \setlength{\headwidth}{\textwidth} 
           \lhead{\textit{MISN-0-$module}}
@@ -664,10 +605,7 @@
 
 <definetag name = "/Sect">
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-  <render>
-      <web></web>
-      <tex></tex>
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 </definetag>
 
 
@@ -696,37 +634,25 @@
 
 <definetag name = "SectContent">
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-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/SectContent">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "SectAtr">  
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/SectAtr">  
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -741,10 +667,7 @@
 
 <definetag name = "/Abstract">
    <meta></abstract></output></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -759,10 +682,7 @@
 
 <definetag name = "/unitname">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -782,10 +702,7 @@
 
 <definetag name = "/ground">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -803,10 +720,7 @@
 
 <definetag name = "/TuSuppl">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -830,19 +744,13 @@
 
 <definetag name = "TuSupplcontent">  
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/TuSupplcontent">  
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -875,10 +783,7 @@
 
 <definetag name = "/newline">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex> 
-   </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -902,19 +807,13 @@
 
 <definetag name = "defmodlength" parms="number">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-   </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/defmodlength">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex> 
-   </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -938,19 +837,13 @@
 
 <definetag name = "TxtProbcontent">  
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "/TxtProbcontent">  
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
@@ -970,18 +863,15 @@
 
 <definetag name = "/PrSuppl">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>
 
 
 <definetag name = "PraFramecontent">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -989,8 +879,8 @@
 <definetag name = "/PraFramecontent">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -998,8 +888,8 @@
 <definetag name = "SugFramecontent">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1007,8 +897,8 @@
 <definetag name = "/SugFramecontent">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1030,8 +920,8 @@
 <definetag name = "/SuSuppl">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1039,7 +929,7 @@
 <definetag name = "NullItem">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\nointerlineskip </tex>
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 </definetag>
@@ -1048,8 +938,8 @@
 <definetag name = "/NullItem">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex> 
+      <web><nothing/></web>
+      <tex><nothing/></tex> 
    </render>
 </definetag>
 
@@ -1071,8 +961,8 @@
 <definetag name = "/AnSuppl">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1094,8 +984,8 @@
 <definetag name = "/MeSuppl">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1121,7 +1011,7 @@
 <definetag name = "raisebox" parms="arg">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\raisebox{$arg}</tex> 
    </render>
 </definetag>
@@ -1130,8 +1020,8 @@
 <definetag name = "/raisebox">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -1139,7 +1029,7 @@
 <definetag name = "raiseboxcontent">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>{</tex> 
    </render>
 </definetag>
@@ -1148,7 +1038,7 @@
 <definetag name = "/raiseboxcontent">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>}</tex>
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 </definetag>
@@ -1193,7 +1083,7 @@
 <definetag name = "newcommand" parms="content">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\newcommand{$content}</tex>
    </render>
 </definetag>
@@ -1202,8 +1092,8 @@
 <definetag name = "/newcommand">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex> 
+      <web><nothing/></web>
+      <tex><nothing/></tex> 
    </render>
 </definetag>
 
@@ -1211,7 +1101,7 @@
 <definetag name = "renewcommand">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\renewcommand </tex>
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 </definetag>
@@ -1220,8 +1110,8 @@
 <definetag name = "/renewcommand">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex> 
+      <web><nothing/></web>
+      <tex><nothing/></tex> 
    </render>
 </definetag>
 
@@ -1293,7 +1183,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -1373,7 +1263,7 @@
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    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -1486,8 +1376,8 @@
 <definetag name = "/TxtDefEqnStaRef">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1528,7 +1418,7 @@
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    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -1555,7 +1445,7 @@
 <definetag name = "/TwoFigures">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\end{minipage}\vskip 1 mm</tex>
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 </definetag>
@@ -1592,7 +1482,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -1627,8 +1517,8 @@
 <definetag name = "/TxtSectRef">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex> 
+      <web><nothing/></web>
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@@ -1636,8 +1526,8 @@
 <definetag name = "SummaryNewCapItems">
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    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1645,8 +1535,8 @@
 <definetag name = "/SummaryNewCapItems">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1654,8 +1544,8 @@
 <definetag name = "SummaryItems">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -1663,8 +1553,8 @@
 <definetag name = "/SummaryItems">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1672,8 +1562,8 @@
 <definetag name = "SummarySubItems">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1681,8 +1571,8 @@
 <definetag name = "/SummarySubItems">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1690,8 +1580,8 @@
 <definetag name = "SummarySubSubItems">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
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   </render>
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@@ -1699,8 +1589,8 @@
 <definetag name = "/SummarySubSubItems">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -1708,7 +1598,7 @@
 <definetag name = "TsStart" parms="module,number">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\setcounter{bookpage}{\value{page}} 
            \setlength{\headwidth}{\textwidth} 
            \lhead{\textit{MISN-0-$module}}     
@@ -1721,8 +1611,8 @@
 <definetag name = "/TsStart">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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@@ -1745,7 +1635,7 @@
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    <render>
       <web></h1></center></web>
-      <tex></tex>
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@@ -1762,8 +1652,8 @@
 <definetag name = "/TxtProbRef">
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    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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@@ -1820,7 +1710,7 @@
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    <render>
       <web></img></center></p></web>
-      <tex></tex>
+      <tex><nothing/></tex>
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@@ -1841,7 +1731,7 @@
    <meta></meta>
    <render>
       <web></img></center></p></web>
-      <tex></tex>
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@@ -1864,7 +1754,7 @@
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    <render>
       <web></h1></center></web>
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@@ -1885,8 +1775,8 @@
 <definetag name = "/WorkHere">
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    <render>
-      <web></web>
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+      <web><nothing/></web>
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@@ -1903,8 +1793,8 @@
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    <render>
-      <web></web>
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+      <web><nothing/></web>
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@@ -1912,7 +1802,7 @@
 <definetag name = "WriteOnLine">
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    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\makebox[4 cm][b]{\hspace{1pt}\hrulefill}</tex>
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@@ -1921,8 +1811,8 @@
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    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1940,7 +1830,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1958,7 +1848,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1976,7 +1866,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1984,8 +1874,8 @@
 <definetag name = "TsEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -1993,8 +1883,8 @@
 <definetag name = "/TsEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2016,8 +1906,8 @@
 <definetag name = "/AnStart">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2025,8 +1915,8 @@
 <definetag name = "AnEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2034,8 +1924,8 @@
 <definetag name = "/AnEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2057,8 +1947,8 @@
 <definetag name = "/MeStart">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2066,8 +1956,8 @@
 <definetag name = "MeEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2075,8 +1965,8 @@
 <definetag name = "/MeEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2084,8 +1974,8 @@
 <definetag name = "IdEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2093,8 +1983,8 @@
 <definetag name = "/IdEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2114,8 +2004,8 @@
 <definetag name = "/IdVersEval">  
    <meta></output></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2135,8 +2025,8 @@
 <definetag name = "/TX">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2156,8 +2046,8 @@
 <definetag name = "/TS">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2177,8 +2067,8 @@
 <definetag name = "/AN">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>  
+      <web><nothing/></web>
+      <tex><nothing/></tex>  
   </render>
 </definetag>
 
@@ -2198,8 +2088,8 @@
 <definetag name = "/ME">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2216,8 +2106,8 @@
 <definetag name = "/InputSkills">
    <meta></InputSkills></output></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2235,8 +2125,8 @@
    <meta></KnowledgeSkills></output>
    </meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2253,8 +2143,8 @@
 <definetag name = "/prrqone">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2262,7 +2152,7 @@
 <definetag name = "TxStart"  parms="module">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\setcounter{bookpage}{\value{page}} 
            \setlength{\headwidth}{\textwidth} 
            \lhead{\textit{MISN-0-$module}}
@@ -2276,8 +2166,8 @@
 <definetag name = "/TxStart">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2285,8 +2175,8 @@
 <definetag name = "TxEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2294,8 +2184,8 @@
 <definetag name = "/TxEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2312,8 +2202,8 @@
 <definetag name = "/TxtDefEqnStaRefNew">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2390,7 +2280,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2408,7 +2298,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2434,8 +2324,8 @@
 <definetag name = "TxtHelpTwoa">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2443,8 +2333,8 @@
 <definetag name = "/TxtHelpTwoa">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2452,8 +2342,8 @@
 <definetag name = "TxtHelpTwob">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2461,8 +2351,8 @@
 <definetag name = "/TxtHelpTwob">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2498,7 +2388,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2572,7 +2462,7 @@
    <meta></meta>
    <render>
       <web><br /><br /></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2598,8 +2488,8 @@
 <definetag name = "TutFramecontent">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2607,8 +2497,8 @@
 <definetag name = "/TutFramecontent">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2644,8 +2534,8 @@
    <meta></RuleApplicationSkills></output>
    </meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2666,7 +2556,7 @@
    <meta></meta>
    <render>
       <web></td></tr></table></center></p></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2701,8 +2591,8 @@
 <definetag name = "/BriefAns">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2719,8 +2609,8 @@
 <definetag name = "/BriefAnsNewPage">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2738,7 +2628,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2755,8 +2645,8 @@
 <definetag name = "/ChRef">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2774,7 +2664,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2810,7 +2700,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2828,7 +2718,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -2861,7 +2751,7 @@
 <definetag name = "/ThreeFigures">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\end{minipage}\vskip 1 mm </tex>
   </render>
 </definetag>
@@ -2880,8 +2770,8 @@
 <definetag name = "/TxtFigChRef">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -2898,8 +2788,8 @@
 <definetag name = "/ChRefNo">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3064,7 +2954,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3081,8 +2971,8 @@
 <definetag name = "/tryit">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
     </render>
 </definetag>
 
@@ -3100,7 +2990,7 @@
    <meta></meta>
    <render>
       <web></a></em></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3118,7 +3008,7 @@
    <meta></meta>
    <render>
       <web></a></em></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3271,7 +3161,7 @@
    <meta></meta>
    <render>
       <web><center><h1>ACKNOWLEDGMENTS</h1></center></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3279,8 +3169,8 @@
 <definetag name = "/Acknowledgments">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3300,8 +3190,8 @@
 <definetag name = "/NsfAcknowledgment">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -3321,8 +3211,8 @@
 <definetag name = "/PS">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -3342,8 +3232,8 @@
 <definetag name = "/AS">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3366,7 +3256,7 @@
    <meta></meta>
   <render>
       <web></font></h1></center></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -3468,7 +3358,7 @@
 <definetag name = "/boundar">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\hfill \parbox[t]{\linewidth - \figwidth- 0.5 cm}{</tex>
    </render>
 </definetag>
@@ -3486,7 +3376,7 @@
 <definetag name = "/boundarone">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\hfill \parbox[t]{\numberwidth}{</tex>
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 </definetag>
@@ -3504,7 +3394,7 @@
 <definetag name = "/boundartwo">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\hfill \parbox[t]{\linewidth - \figwidth - \numberwidth - 0.5 cm}{</tex>
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 </definetag>
@@ -3513,7 +3403,7 @@
 <definetag name = "noindent">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\noindent </tex>
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 </definetag>
@@ -3522,15 +3412,15 @@
 <definetag name = "/noindent">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
 <definetag name = "nointerlineskip">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\nointerlineskip </tex>
    </render>
 </definetag>
@@ -3539,8 +3429,8 @@
 <definetag name = "/nointerlineskip">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3548,8 +3438,8 @@
 <definetag name = "newpage">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3557,8 +3447,8 @@
 <definetag name = "/newpage">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3599,8 +3489,8 @@
 <definetag name = "/OptionalResources">
    <meta></PostOptions></output></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -3618,8 +3508,8 @@
    <meta></PostOptions></output>
    </meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3636,8 +3526,8 @@
 <definetag name = "/ProblemSolvingSkills">
    <meta></ProblemSolvingSkills></output></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3682,8 +3572,8 @@
 <definetag name = "/CharacterFigure">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3783,7 +3673,7 @@
 <definetag name = "/GlossaryList">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\end{itemize}</tex>
    </render>
 </definetag>
@@ -3821,7 +3711,7 @@
    <meta></meta>
    <render>
       <web></td></tr></table></p><br /><br /></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3843,8 +3733,8 @@
 <definetag name = "/LgStart">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3852,8 +3742,8 @@
 <definetag name = "AsEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3861,8 +3751,8 @@
 <definetag name = "/AsEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3870,8 +3760,8 @@
 <definetag name = "PsEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3879,8 +3769,8 @@
 <definetag name = "/PsEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3888,8 +3778,8 @@
 <definetag name = "LgEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -3897,8 +3787,8 @@
 <definetag name = "/LgEnd">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -3962,8 +3852,8 @@
 <definetag name = "/RequiredResources">
    <meta></RequiredResources></output></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -3980,8 +3870,8 @@
 <definetag name = "/ProjectSkills">
    <meta></ProjectSkills></output></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -4025,8 +3915,8 @@
 <definetag name = "/horline">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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@@ -4062,7 +3952,7 @@
    <meta></meta>
    <render>
       <web></tr></web>
-      <tex></tex>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -4089,7 +3979,7 @@
    <meta></meta>
    <render>
       <web><td></web>
-      <tex></tex>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -4098,7 +3988,7 @@
    <meta></meta>
    <render>
       <web></td></web>
-      <tex></tex>
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@@ -4151,8 +4041,8 @@
 <definetag name = "/dotfill">
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    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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@@ -4169,8 +4059,8 @@
 <definetag name = "/number">
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    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
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 </definetag>
 
@@ -4178,7 +4068,7 @@
 <definetag name = "mbox">
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    <render>
-      <web></web>
+      <web><nothing/></web>
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@@ -4219,8 +4109,8 @@
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    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4228,8 +4118,8 @@
 <definetag name = "/boldm">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4237,8 +4127,8 @@
 <definetag name = "clearpage">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4246,8 +4136,8 @@
 <definetag name = "/clearpage">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4255,7 +4145,7 @@
 <definetag name = "pagebreak" parms="arg">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\pagebreak$arg </tex>
    </render>
 </definetag>
@@ -4264,8 +4154,8 @@
 <definetag name = "/pagebreak">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4303,8 +4193,8 @@
 <definetag name = "/BlackTriangle">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4383,7 +4273,7 @@
    <meta></meta>
    <render>
       <web><br /><br /></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4458,7 +4348,7 @@
 <definetag name = "endinput">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\endinput</tex>
   </render>
 </definetag>
@@ -4467,8 +4357,8 @@
 <definetag name = "/endinput">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4486,7 +4376,7 @@
    <meta></meta>
    <render>
       <web><br /><br /></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4522,7 +4412,7 @@
    <meta></meta>
    <render>
       <web><br /><br /></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4548,8 +4438,8 @@
 <definetag name = "Analytical">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4557,8 +4447,8 @@
 <definetag name = "/Analytical">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4575,8 +4465,8 @@
 <definetag name = "/prrqtwo">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4593,8 +4483,8 @@
 <definetag name = "/hfill">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4639,7 +4529,7 @@
    <meta></meta>
    <render>
       <web></img></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4665,8 +4555,8 @@
 <definetag name = "TxtDescr">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4674,8 +4564,8 @@
 <definetag name = "/TxtDescr">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4701,7 +4591,7 @@
 <definetag name = "break">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\break</tex>
    </render>
 </definetag>
@@ -4710,8 +4600,8 @@
 <definetag name = "/break">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4791,7 +4681,7 @@
 <definetag name = "WriteOnSpacedLine" parms="arg">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\makebox[$arg][b]{\hspace{1pt}\rule{0pt}{18pt}\hrulefill}</tex>
    </render>
 </definetag>
@@ -4800,8 +4690,8 @@
 <definetag name = "/WriteOnSpacedLine">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4809,7 +4699,7 @@
 <definetag name = "web">
    <meta><output><url></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\keephidden{</tex>
    </render>
 </definetag>
@@ -4818,7 +4708,7 @@
 <definetag name = "/web">
    <meta></url></output></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>}</tex>
    </render>
 </definetag>
@@ -4828,7 +4718,7 @@
    <meta></meta>
    <render>
       <web><b><i></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4837,7 +4727,7 @@
    <meta></meta>
    <render>
       <web></i></b></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -4854,8 +4744,8 @@
 <definetag name = "/TxtExample">
    <meta></meta>
   <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -4992,7 +4882,7 @@
    <meta></meta>
    <render>
       <web></img></center></p></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5038,7 +4928,7 @@
    <meta></meta>
    <render>
       <web></img></center></p></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5046,7 +4936,7 @@
 <definetag name = "AfterSectionAdvice">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\vspace*{0.5pc}</tex>
    </render>
 </definetag>
@@ -5055,8 +4945,8 @@
 <definetag name = "/AfterSectionAdvice">
    <meta></meta>
   <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5141,8 +5031,8 @@
 <definetag name = "/ReadingsAccess">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5207,8 +5097,8 @@
 <definetag name = "/LearnerLectureLg">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5232,8 +5122,8 @@
 <definetag name = "/ComputerProjectGrader">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5253,8 +5143,8 @@
 <definetag name = "/ComputerProjectPoints">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5313,8 +5203,8 @@
 <definetag name = "/ComputerProjectExam">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5322,7 +5212,7 @@
 <definetag name = "begindocument">  
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\begin{document}</tex>
    </render>
 </definetag>
@@ -5331,8 +5221,8 @@
 <definetag name = "/begindocument">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5340,7 +5230,7 @@
 <definetag name = "enddocument">  
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\end{document}</tex>
    </render>
 </definetag>
@@ -5349,8 +5239,8 @@
 <definetag name = "/enddocument">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5358,7 +5248,7 @@
 <definetag name = "inputfile" parms="name">  
    <meta><output><includedfile>$name</includedfile></output></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\input $name </tex>
    </render>
 </definetag>
@@ -5367,8 +5257,8 @@
 <definetag name = "/inputfile">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5376,7 +5266,7 @@
 <definetag name = "mNumber" parms="number">  
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\setcounter{PhyModNo}{$number}</tex>
    </render>
 </definetag>
@@ -5385,8 +5275,8 @@
 <definetag name = "/mNumber">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5394,8 +5284,8 @@
 <definetag name = "ComputerUse">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5403,8 +5293,8 @@
 <definetag name = "/ComputerUse">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5412,8 +5302,8 @@
 <definetag name = "Project">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5421,8 +5311,8 @@
 <definetag name = "/Project">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5439,8 +5329,8 @@
 <definetag name = "/TxtProbSectref">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5448,8 +5338,8 @@
 <definetag name = "TutFrameItem">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5457,16 +5347,16 @@
 <definetag name = "/TutFrameItemcontent">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
 <definetag name = "TutFrameItemcontent">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5474,8 +5364,8 @@
 <definetag name = "/TutFrameItem">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5528,7 +5418,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5547,7 +5437,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5566,7 +5456,7 @@
    <meta></meta>
    <render>
       <web></a></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5588,8 +5478,8 @@
 <definetag name = "/LibraryBook">
    <meta></meta>
   <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -5748,8 +5638,8 @@
 <definetag name = "/LibraryReadings">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5766,8 +5656,8 @@
 <definetag name = "/SeeLocalGuide">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5775,8 +5665,8 @@
 <definetag name = "CtEnd">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5784,8 +5674,8 @@
 <definetag name = "/CtEnd">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5793,8 +5683,8 @@
 <definetag name = "CtStart" parms="module">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5802,8 +5692,8 @@
 <definetag name = "/CtStart">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5838,8 +5728,8 @@
 <definetag name = "/LineFill">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5870,8 +5760,8 @@
 <definetag name = "TableTable" parms="numcol">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5879,8 +5769,8 @@
 <definetag name = "/TableTable">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5889,7 +5779,7 @@
    <meta></meta>
    <render>
       <web><br /><br /></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5897,8 +5787,8 @@
 <definetag name = "/TableTabletitle">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5906,7 +5796,7 @@
 <definetag name = "TableList">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\begin{itemize}</tex>
    </render>
 </definetag>
@@ -5915,7 +5805,7 @@
 <definetag name = "/TableList">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\end{itemize}</tex>
    </render>
 </definetag>
@@ -5942,7 +5832,7 @@
 <definetag name = "tabcolsep" parms="arg">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\tabcolsep=$arg </tex>
    </render>
 </definetag>
@@ -5951,8 +5841,8 @@
 <definetag name = "/tabcolsep">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5960,8 +5850,8 @@
 <definetag name = "TcItem">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5969,8 +5859,8 @@
 <definetag name = "/TcItem">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5978,8 +5868,8 @@
 <definetag name = "Tc">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -5987,8 +5877,8 @@
 <definetag name = "/Tc">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -6005,8 +5895,8 @@
 <definetag name = "/VerticalWorkSpace">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -6024,8 +5914,8 @@
 <definetag name = "/include">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -6034,7 +5924,7 @@
    <meta></meta>
    <render>
       <web><h1></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -6043,7 +5933,7 @@
    <meta></meta>
    <render>
       <web></h1></web>
-      <tex></tex>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -6051,7 +5941,7 @@
 <definetag name = "enlargethispage" parms="arg">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\enlargethispage{$arg}</tex>
    </render>
 </definetag>
@@ -6060,8 +5950,8 @@
 <definetag name = "/enlargethispage">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -6069,7 +5959,7 @@
 <definetag name = "parbox" parms="align,size">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\parbox[$align]{$size}{</tex>
    </render>
 </definetag>
@@ -6078,7 +5968,7 @@
 <definetag name = "/parbox">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>}</tex>
    </render>
 </definetag>
@@ -6132,8 +6022,8 @@
 <definetag name = "/fl">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -6173,8 +6063,8 @@
 <definetag name = "/linefill">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -6182,7 +6072,7 @@
 <definetag name = "hspace" parms="arg">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\hspace*{$arg}</tex>
    </render>
 </definetag>
@@ -6191,8 +6081,8 @@
 <definetag name = "/hspace">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
    </render>
 </definetag>
 
@@ -6227,8 +6117,8 @@
 <definetag name = "/example">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
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@@ -6332,7 +6222,7 @@
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@@ -6421,8 +6311,8 @@
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@@ -6448,8 +6338,8 @@
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@@ -6466,8 +6356,8 @@
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@@ -6475,7 +6365,7 @@
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@@ -6493,7 +6383,7 @@
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@@ -6511,7 +6401,7 @@
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@@ -7175,8 +7065,8 @@
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-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7461,8 +7351,8 @@
 <definetag name = "/wscap">
    <meta></meta>
   <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7492,8 +7382,8 @@
 <definetag name = "currentlhead" parms="module,number">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7501,8 +7391,8 @@
 <definetag name = "/currentlhead">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7510,8 +7400,8 @@
 <definetag name = "SubSubSect">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7537,8 +7427,8 @@
 <definetag name = "/xpSubSubSect">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7569,8 +7459,8 @@
 <definetag name = "AsEqn">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7578,8 +7468,8 @@
 <definetag name = "/AsEqn">  
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7587,8 +7477,8 @@
 <definetag name = "TxtDefDisplayEqn">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7596,8 +7486,8 @@
 <definetag name = "/TxtDefDisplayEqn">
    <meta></meta>
   <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7618,7 +7508,7 @@
    <meta></meta>
    <render>
       <web></img></p></web>
-      <tex></tex>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7626,7 +7516,7 @@
 <definetag name = "medskip">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\medskip</tex>
   </render>
 </definetag>
@@ -7635,8 +7525,8 @@
 <definetag name = "/medskip">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7653,8 +7543,8 @@
 <definetag name = "/solution">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7662,7 +7552,7 @@
 <definetag name = "solitem">
    <meta></meta>
    <render>
-      <web></web>
+      <web><nothing/></web>
       <tex>\vskip 2 mm </tex>
   </render>
 </definetag>
@@ -7671,8 +7561,8 @@
 <definetag name = "/solitem">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7680,8 +7570,8 @@
 <definetag name = "Ans">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7689,8 +7579,8 @@
 <definetag name = "/Ans">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7707,8 +7597,8 @@
 <definetag name = "/ldots">
    <meta></meta>
    <render>
-      <web></web>
-      <tex></tex>
+      <web><nothing/></web>
+      <tex><nothing/></tex>
   </render>
 </definetag>
 
@@ -7742,10 +7632,7 @@
 
 <definetag name = "/redir">
    <meta></meta>
-   <render>
-      <web></web>
-      <tex></tex>
-  </render>
+   <render><nothing/></render>
 </definetag>