Type:      C, Input

Author:    Young S. Ham, Naval Research Laboratory
	   ham@xbt.nrl.navy.mil

Description:

  The integer_step module supplies an integer value to one or more
  receiving modules from an intial integer. The current integer is 
  incremented by step_size by means of a mouse click on a button.

  This module is very useful when viewing images or to fire an 
  input value in order is desired. One does not have to keep 
  typing an integer or play with the dial widget for a new input
  value.