Index: trunk/doc/design/03_drawing.html
===================================================================
--- trunk/doc/design/03_drawing.html	(revision 4501)
+++ trunk/doc/design/03_drawing.html	(revision 4502)
@@ -414,12 +414,13 @@
 <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
 <tr><td> loclib_name<td> no        <td> arbitrary textual name generated for local lib entries (some groups under the <i>indirect</i> root group); this field is always empty for groups under the <i>direct</i> root group
+<tr><td> uuid       <td> no        <td> universally unique ID for referencing the group from external sources
+<tr><td> src_uuid   <td> no        <td> if the group was copied from an existing group, universally unique ID of the source group it was copied from
 </table>
 
 <p><table border=1 cellspacing=0>
 <tr><th colspan=3 bgcolor="#aaaaaa"> {des3:55} group attributes
 <tr><th> attribute  <th> value          <th> description
-<tr><td> <i>uid</i> <th> &nbsp;         <th> unique ID for referencing the group from external sources
 <tr><td> <i>role</i> <th> one of 3.3.3. <th> specify what concrete object the group represents
 </table>
 
@@ -551,9 +552,4 @@
 <tr><td> direct           <td> yes       <td> group for visible objects, oid=2
 </table>
 
-
-<p><table border=1 cellspacing=0>
-<tr><th colspan=3 bgcolor="#aaaaaa"> {des3:68} sheet attributes
-<tr><th> attribute  <th> value          <th> description
-<tr><td> <i>uid</i> <th> &nbsp;         <th> unique ID for referencing the sheet from external sources
-</table>
+<p>{des3:68} sheet uuid is the uuid of the direct group.