fix bug of G53.1 and remove NcEnv.SetToolHeightCompensationOnFeatureNormal property.

App/wwwroot/HiAPI-docsite/api/Hi.Geom.StlUtil.html

@@ -240,7 +240,8 @@ If <a class="xref" href="Hi.Geom.IGetStl.html#Hi_Geom_IGetStl_GetStl">GetStl()</
   
   </h3>
 
-  <div class="markdown level1 summary"></div>
+  <div class="markdown level1 summary"><p>Converts an STL geometry to a sparkle line drawing.</p>
+</div>
   <div class="markdown level1 conceptual"></div>
 
   <div class="codewrapper">
@@ -250,13 +251,15 @@ If <a class="xref" href="Hi.Geom.IGetStl.html#Hi_Geom_IGetStl_GetStl">GetStl()</
   <h4 class="section">Parameters</h4>
   <dl class="parameters">
     <dt><code>src</code> <a class="xref" href="Hi.Geom.IGetStl.html">IGetStl</a></dt>
-    <dd></dd>
+    <dd><p>The source STL geometry.</p>
+</dd>
   </dl>
 
   <h4 class="section">Returns</h4>
   <dl class="parameters">
     <dt><a class="xref" href="Hi.Disp.Drawing.html">Drawing</a></dt>
-    <dd></dd>
+    <dd><p>A sparkle line drawing, or null if the STL or its triangles are null.</p>
+</dd>
   </dl>