Improved tabbing
diff --git a/dev/js/src/vc/doc.js b/dev/js/src/vc/doc.js
index 66dfc6e..07943f0 100644
--- a/dev/js/src/vc/doc.js
+++ b/dev/js/src/vc/doc.js
@@ -557,6 +557,9 @@
       case "excludes":
 	string += '!~';
 	break;
+      case "containsnot":
+	string += '!~';
+	break;
       case "geq":
 	string += 'since';
 	break;