Add explanation to graph label

1 files changed, 5 insertions, 2 deletions

diff --git a/bin/depsdot b/bin/depsdot
index 35d1d36..4dad087 100755
--- a/bin/depsdot
+++ b/bin/depsdot
@@ -78,8 +78,11 @@ sub main
 			localtime()) . "\n */\n\n" .
 		"strict digraph deps {\n" .
 		"\toverlap = false;\n\tsplines = true;\n\tlayout = neato;\n" .
-		"\tlabel = \"ProteanOS Source Package Dependencies\";\n" .
-		"\n\t/* Source packages */\n");
+		"\tlabel = <<B>ProteanOS Source Package Dependencies</B><BR/>" .
+		"\n\t\tGray nodes are leaf packages (no reverse dependencies)" .
+		"<BR/>\n\t\tGray edges are dependencies on multiple source " .
+		"packages&nbsp;\n\t\t\tthat build binaries of the same name>;" .
+		"\n\n\t/* Source packages */\n");
 	foreach my $src (sort(@src_pkgs)) {
 		my $attr = '';
 		if (not defined($non_leaf_src_pkgs{$src})) {