NAME: 
	Zoom_1D
 PURPOSE:
	Gets interactively or statically (numbers read from the
	keyboard) the minimum and maximum value
	for the x or y range of a plot, and sets them.
 CATEGORY:
	1D
 CALLING SEQUENCE:
	Zoom_1D, dir [, xMin, xMax, yMin, yMax ]
 INPUT:
	dir: The direction to zoom
 OUTPUTS:
	xMin, xMax, yMin, yMax: The new limits of the plot
 KEYWORD:
	/STATIC: If present, the zoom boundaries are 
		entered on the terminal window.
 SIDE EFFECT:
	On X terminals., windows are opened.

 CALLS: ***
	CURSORVT, GETHMS, Read_Test, WMESG
 CALLED BY:
	Display_1D
 MODIFICATION HISTORY:
	Created by A.Csillaghy in May 1991, ETHZ
	Modified for date/time in Nov. 92. A.Cs.