Documentation of TreeSelection::set_select_function SlotSelect

[dexter <dexter balabit hu>]

The docs of SlotSelect here:
http://library.gnome.org/devel/gtkmm/unstable/classGtk_1_1TreeSelection.html#a7c408b8e2b45b4a65a2a9ad66d9602cf

points to a general sigc docs, which is useless here. It should point to 
something like this:

  /** For instance, bool on_select_function(const 
Glib::RefPtr<TreeModel>& model, const TreeModel::Path& path, bool 
path_currently_selected)
   * The select function should return true if the state of the node 
may be toggled,
   * and false if the state of the node should be left unchanged.
   */