Add note about weight 0 edges in twopi

diff --git a/doc/info/attrs.html b/doc/info/attrs.html
index 800cef0251f81bb44e276b08d23f8893f94d5891..0421fbd87382568baa79d706dae4f502d7ffaaf5 100644 (file)
--- a/doc/info/attrs.html
+++ b/doc/info/attrs.html
@@ -507,7 +507,7 @@ of the layout programs.
  <TR><TD><A NAME=a:voro_margin HREF=#d:voro_margin>voro_margin</A>
 </TD><TD>G</TD><TD>double</TD><TD ALIGN="CENTER">0.05</TD><TD>0.0</TD><TD>not dot</TD> </TR>
  <TR><TD><A NAME=a:weight HREF=#d:weight>weight</A>
-</TD><TD>E</TD><TD>int<BR>double</TD><TD ALIGN="CENTER">1</TD><TD>0(dot)<BR>1(neato,fdp)</TD><TD></TD> </TR>
+</TD><TD>E</TD><TD>int<BR>double</TD><TD ALIGN="CENTER">1</TD><TD>0(dot,twopi)<BR>1(neato,fdp)</TD><TD></TD> </TR>
  <TR><TD><A NAME=a:width HREF=#d:width>width</A>
 </TD><TD>N</TD><TD>double</TD><TD ALIGN="CENTER">0.75</TD><TD>0.01</TD><TD></TD> </TR>
  <TR><TD><A NAME=a:xdotversion HREF=#d:xdotversion>xdotversion</A>
@@ -1979,6 +1979,8 @@ of the layout programs.
 <DD>  Weight of edge. In dot, the heavier the weight, the shorter,
   straighter and more vertical the edge is.
   <B>N.B.</B> Weights in dot must be integers.
+  For twopi, a weight of 0 indicates the edge should not be used in constructing a
+  spanning tree from the root.
   For other layouts, a larger weight encourages the layout to 
   make the edge length closer to that specified by the 
   <A HREF=#d:len>len</A> attribute.

diff --git a/doc/infosrc/attrs b/doc/infosrc/attrs
index 315e2b8d3c0788fd8ea58d56e740e620a47c14c1..b2a7e4c89de8e5200b1a491baa1be28902f669e4 100644 (file)
--- a/doc/infosrc/attrs
+++ b/doc/infosrc/attrs
@@ -1364,10 +1364,12 @@ Voronoi technique. dim' = (1+2*margin)*dim.
 #  Obsolete, replaced by sep
 #w:E:double:1.0; neato
 #  Redundant definition of weight in neato, cf. bug 9.
-:weight:E:int/double:1:0(dot)/1(neato,fdp);
+:weight:E:int/double:1:0(dot,twopi)/1(neato,fdp);
 Weight of edge. In dot, the heavier the weight, the shorter,
 straighter and more vertical the edge is.
 <B>N.B.</B> Weights in dot must be integers.
+For twopi, a weight of 0 indicates the edge should not be used in constructing a
+spanning tree from the root.
 For other layouts, a larger weight encourages the layout to 
 make the edge length closer to that specified by the 
 <A HREF=#d:len>len</A> attribute.