diff -r 31a93dd6f714 -r b63ae56979ef tools/lgf-gen.cc
--- a/tools/lgf-gen.cc	Tue Oct 09 16:22:04 2007 +0000
+++ b/tools/lgf-gen.cc	Tue Oct 09 17:11:42 2007 +0000
@@ -15,6 +15,62 @@
  * purpose.
  *
  */
+///\ingroup tools
+///\file
+///\brief Special plane graph generator.
+///
+///Graph generator application for various types of plane graphs.
+///
+///\verbatim
+/// This program converts various DIMACS formats to the LEMON Graph Format
+/// (LGF).
+///
+/// Usage:
+///   ./tools/lgf-gen [-2con|-tree|-tsp|-tsp2|-dela] [-disc|-square|-gauss]
+///      [-rand|-seed int] [--help|-h|-help] [-area num] [-cities int] [-dir]
+///      [-eps] [-g int] [-n int] [prefix]
+/// Where:
+///   [prefix]
+///      Prefix of the output files. Default is 'lgf-gen-out'
+///   --help|-h|-help
+///      Print a short help message
+///   -2con
+///      Create a two connected planar graph
+///   -area num
+///      Full relative area of the cities (default is 1)
+///   -cities int
+///      Number of cities (default is 1)
+///   -dela
+///      Delaunay triangulation graph
+///   -dir
+///      Directed graph is generated (each edges are replaced by two directed ones)
+///   -disc
+///      Nodes are evenly distributed on a unit disc (default)
+///   -eps
+///      Also generate .eps output (prefix.eps)
+///   -g int
+///      Girth parameter (default is 10)
+///   -gauss
+///      Nodes are located according to a two-dim gauss distribution
+///   -n int
+///      Number of nodes (default is 100)
+///   -rand
+///      Use time seed for random number generator
+///   -seed int
+///      Random seed
+///   -square
+///      Nodes are evenly distributed on a unit square
+///   -tree
+///      Create a min. cost spanning tree
+///   -tsp
+///      Create a TSP tour
+///   -tsp2
+///      Create a TSP tour (tree based)
+///\endverbatim
+/// \image html plane_tree.png
+/// \image latex plane_tree.eps "Eucledian spanning tree" width=\textwidth
+///
+
 
 #include <lemon/list_graph.h>
 #include <lemon/graph_utils.h>