DRIZTOOLS - Support tools for image combination with Drizzle 
            Richard Hook & Andy Fruchter, (contact: rhook@eso.org)

tdrizzle - newer version of drizzle with context images, multiple
           kernel support, secondary geometric parameters
           and many other small enhancements. UNSUPPORTED TEST VERSION.

wdrizzle - an identical code to tdrizzle except with the additional
           option of using WCS-driven geometrical transformations.
           UNSUPPORTED TEST VERSION.

traxy - transforms an X,Y pixel position from input to output pixel
	coordinates using the same scheme as drizzle.

tranback - the reverse of traxy, goes from an output X,Y to the input
	   equivalent pixel position.

wcs2dr - read the headers from a list of images and calculate the drizzle
	 parameters necessary to align these inputs with a reference image.