Update todo list

diff --git a/doc/todo.html b/doc/todo.html
index 4115b02c2afe593cafbe14c19bf6eebfd045c5c2..24eab9c8d847d733f1439cb60978234193ac2be1 100755 (executable)
--- a/doc/todo.html
+++ b/doc/todo.html
@@ -62,7 +62,7 @@ forming a bipartite graph, return splines to bundle the edges together)
 ? - better spacing of edges along the side of a node, especially
 exposed port sides. Perhaps extend compass points to S, N, E, W to
 mean anywhere along that side.
-? - Tabular layout in rows and columns in dot (swim lanes)
+ERG - Tabular layout in rows and columns in dot (swim lanes)
       Crossing minimization with some nodes in columns
 ? - Enable arbitrary depth clusters in neato using IPSEP
 ? - Allow mixed edge types within the same graph
@@ -89,6 +89,7 @@ Support rank=min/max within the context of a cluster
 </pre>
 <H2>General R&D problems</H2>
 <pre>
+Aspect ratio allowing clusters
 Incremental layouts
 Dot with orthogonal, coalesced edges (e.g., <A HREF=http://upload.wikimedia.org/wikipedia/commons/7/74/Uml_diagram.svg>this</A>)
 Generalizing the above, support for hyperedges