diff --git a/docs/Doxygen/groups.dxy b/docs/Doxygen/groups.dxy
index c2c26e7c..53fd4f2a 100644
--- a/docs/Doxygen/groups.dxy
+++ b/docs/Doxygen/groups.dxy
@@ -1,7 +1,8 @@
 /** \defgroup space Space
-This module contains all the basic types for representing spatial entities like point, box, line planes etc.
+This module contains all the basic types for representing spatial entities like points (vcg::Point3) box3, line planes etc.
 */
 /** \defgroup vertex Vertex of triangular,tetrahedral meshes
+This module contains the documentation for the type and the functions used for representing and managing vertexes of meshes
 */
 /** \defgroup face Faces 
 */