These directories contain the source, documentation, and default parameter
files for all IRAF system packages.

	cl		The command language
	dataio		Data format conversions (FITS, card image, etc.)
	dbms		Database management utilities
	images		General image processing and display
	language	CL language stuff (task, kill, set, etc.)
	lists		List processing utilities
	obsolete	Obsolete tasks to be phased out
	plot		General plotting utilities
	proto		Prototype tasks
	softools	Software tools
	system		System utilities (files etc.)
	utilities	Miscellaneous utilities

	xtools		Applications tools library
	bench		Benchmarks package (not an installed package)