NAME:
	portrait
 PURPOSE: (one line)
	IDL procedure for initializing the PS device for portrait mode plotting.
 DESCRIPTION:
	Output plotting device is changed to PS in portrait mode with a
	Helvetica font.
 CATEGORY:
	Utility
 CALLING SEQUENCE:
	portrait
 INPUTS:
	None.
 OPTIONAL INPUT PARAMETERS:
 KEYWORD PARAMETERS:
 OUTPUTS:
	None.
 COMMON BLOCKS:
 SIDE EFFECTS:
 RESTRICTIONS:
 PROCEDURE:
 MODIFICATION HISTORY:
	Written by Marc W. Buie, Lowell Observatory