Index: trunk/doc/design/02_data.html
===================================================================
--- trunk/doc/design/02_data.html	(revision 2199)
+++ trunk/doc/design/02_data.html	(revision 2200)
@@ -133,6 +133,13 @@
 can be a graph that even includes cycles. In other words, a wire-net can
 be drawn as many lines with junctions and loops.
 
+<p id="des2:81">{des2:81}
+A junction is graphics within a wire-net that represents connected crossings
+of wires between wire objects of the same wire-nt. The simplest junction is
+a zero-length line drawn with a pen thicker than wires. Any other junction
+graphic is drawn packing atoms in a group or group_ref with role=junction
+within the wirenet.
+
 <p>{des2:14}
 A wire-net can be connected to zero or more ports or bus-ports. A
 wire-net can not leave the current sheet - there are no inter-sheet wire-segments.
Index: trunk/doc/design/03_drawing.html
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--- trunk/doc/design/03_drawing.html	(revision 2199)
+++ trunk/doc/design/03_drawing.html	(revision 2200)
@@ -477,6 +477,7 @@
 	<tr><td> symbol         <td> <a href="02_data.html#des2:18"> des2:18 </a>
 	<tr><td> terminal       <td> <a href="02_data.html#des2:25"> des2:24 </a>
 	<tr><td> wire-net       <td> <a id="role_wire_net"> <a href="02_data.html#des2:13"> des2:13 </a>
+	<tr><td> junction       <td> <a href="02_data.html#des2:81"> des2:81 </a>
 </table>
 
 <p>{des3:78} An empty or missing role attribute means the group is a logical