parameters: (self, widget)
docstring: ! Set Smaller Callback
          @param self this object
          @param widget widget
          @return none
docstring_summary: ! Set Smaller Callback
docstring_tokens: ! Set Smaller Callback
function: def __set_smaller_cb(self, widget):
          """! Set Smaller Callback
          @param self this object
          @param widget widget
          @return none
          """
          self.__render.set_smaller_zoom()
function_tokens: def __set_smaller_cb ( self , widget ) : self . __render . set_smaller_zoom ( )