Revision: 68886
          http://sourceforge.net/p/brlcad/code/68886
Author:   brlcad
Date:     2016-09-22 01:15:40 +0000 (Thu, 22 Sep 2016)
Log Message:
-----------
sounds like the quad isn't necessarily planar if the intent of the triangles is 
a better fit.

Modified Paths:
--------------
    
brlcad/branches/brep-debug/doc/docbook/system/implementation/en/bool_eval_development.xml

Modified: 
brlcad/branches/brep-debug/doc/docbook/system/implementation/en/bool_eval_development.xml
===================================================================
--- 
brlcad/branches/brep-debug/doc/docbook/system/implementation/en/bool_eval_development.xml
   2016-09-22 01:12:58 UTC (rev 68885)
+++ 
brlcad/branches/brep-debug/doc/docbook/system/implementation/en/bool_eval_development.xml
   2016-09-22 01:15:40 UTC (rev 68886)
@@ -425,7 +425,7 @@
           pair of subsurfaces with intersecting bounding boxes is
           tested for intersection. This is accomplished by
           approximating each subsurface with two triangles (i.e. a
-          planar quad whose corners coincide with those of the actual
+          'split' quad whose corners coincide with those of the actual
           subsurface patch, which has been split diagonally for a more
           accurate fit). The triangles are then intersected, and the
           average of all intersection points is used as the initial
@@ -435,9 +435,9 @@
           surfaces.
         </para>
         <para>
-          Solved points that lies inside an overlap region identified
-          in the first stage are discarded. Of the remaining points
-          solved intersection points between
+          Solved points that reside inside an overlap region
+          identified in the first stage are discarded. Of the
+          remaining solved intersection points between
           <parameter>surfA</parameter> and
           <parameter>surfB</parameter>, those which are near one
           another are stitched together into polyline curves. If a

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