   yield from @_walk_joint_coordinates_events            me
   yield from @_walk_quad_sides_events                   me
   yield from @_walk_quad_coordinates_events             me
-  yield from @_walk_debugging_events                    me
-  yield from @_walk_quadgrid_events                     me
-  yield from @_walk_borders_events                      me
+  yield from @_walk_debug_joints_events                 me
+  yield from @_walk_debug_quadgrid_events               me
+  yield from @_walk_quad_borders_events                 me
   yield from @_walk_closing_events                      me
   #.........................................................................................................
   # ### dump description for debugging ###

      sDashed:            'dashed'
      sRed:               'red'
      sBlack:             'black'
      sQuadgrid:          'sRed,sDotted,sThin'
      sJoints:            'gray!30,sThick'
    #.......................................................................................................
    default:
      gridwidth:  4

  yield return

#-----------------------------------------------------------------------------------------------------------
@_walk_debug_quadgrid_events = ( me ) ->
  return null unless me.quadgrid
  #.........................................................................................................
  ### TAINT code duplication; use iterator ###
