The ST-ECF IRAF Layered package (V1.2++ December 2001)

driztools - Package of additional support tools for drizzling 
            (not including drizzle itself)
	    (Andy Fruchter/Richard Hook)

impol     - Package of imaging polarimetry software (Jeremy Walsh)
            (Revised version 2.0 including ACS support)

specres   - Package of spectroscopy restoration tools (Jeremy Walsh)

imres     - Package of image restoration tasks, including CPLUCY
	    (Richard Hook)

nictools  - Package to assist the processing of NICMOS grism images
	    (Wolfram Freudling)

slitless  - Slitless spectroscopy quick-look extraction tool
	    (Norbert Pirzkal)