Index: 03_drawing.html
===================================================================
--- 03_drawing.html	(revision 1971)
+++ 03_drawing.html	(revision 1972)
@@ -406,6 +406,9 @@
 <tr><td> memb       <td> yes       <td> list of 1 or more member objects; these drawing objects are the children of the group node
 <tr><td> rot        <td> yes       <td> rotation angle around x;y;  can be 0 for no rotation
 <tr><td> x, y       <td> yes       <td> x;y offset; can be 0;0 for no action
+<tr><td> mirx       <td> no        <td> boolean; mirror X coords (mirror over y axis); default is false if not specified
+<tr><td> miry       <td> no        <td> boolean; mirror Y coords (mirror over x axis); default is false if not specified
+
 </table>
 
 <p><table border=1 cellspacing=0>
@@ -417,7 +420,8 @@
 
 <p>{des3:56} The list of members consist of 1 or more atoms or composites. If
 the rotation angle is specified, first the coordinates of members are
-rotated around the rotation center.  If the offset is specified, the
+rotated around the rotation center. If any of the mir* fields are true,
+mirroring is performed then.  If the offset is specified, the
 coordinates of members are shifted by the offset before the rendering.
 
 <h3> 3.3.2. The group_ref object </h3>
@@ -434,6 +438,8 @@
 <tr><td> ref        <td> yes       <td> reference to an existing group
 <tr><td> rot        <td> yes       <td> rotation angle around x;y; can be 0 for no rotation
 <tr><td> x, y       <td> yes       <td> x;y offset; can be 0;0 for no action
+<tr><td> mirx       <td> no        <td> boolean; mirror X coords (mirror over y axis); default is false if not specified
+<tr><td> miry       <td> no        <td> boolean; mirror Y coords (mirror over x axis); default is false if not specified
 </table>
 
 <p>{des3:59} The same attributes are available as for the group object.