gk::telepointers attach widget
The gk::telepointers command allows you to add multiple cursors to a Tk widget and all of its children. Telepointers are small cursors that represent the mouse cursor of other users on your own screen, allowing you to keep aware of their work.Use "gk::telepointers attach" to attach telepointers to a particular widget. All of your mouse movements will then be automatically sent to all other users so they can display your telepointer.