Index: design/06_hierarchy.html
===================================================================
--- design/06_hierarchy.html	(revision 10203)
+++ design/06_hierarchy.html	(revision 10204)
@@ -84,7 +84,7 @@
 	<tr><td>subtree-local <td><code> v/netname  </code><td> visible only from within a subtree of the hierarchy
 	<tr><td>sheet-local   <td><code> ./netname  </code><td> visible only from within the same sheet
 	<tr><td>auto          <td><code> netname    </code><td> bind to an existing sheet-local net if available, else to a subtree-local net, else to a global net, else create a new global net
-	<tr><td>subtree-auto  <td><code> ^/netname  </code><td> similar to auto, but is looking only for subtree-local (<code>v/</code>) networks - no locals and no globals
+	<tr><td>subtree-auto  <td><code> ^/netname  </code><td> similar to auto, but is looking only for subtree-local (<code>v/</code>) networks - no locals and no globals; when subtree-local net is not found, an error is generated
 </table>