gti packages
	attfilter	Exposure-specific attitude data filtering and GTI creation	pdf	ChangeLog
	gtialign	Aligns asynchronous GTI files to frame readout boundaries	pdf	ChangeLog
	gtibuild	Constructs a GTI table from an ascii description file	pdf	ChangeLog
	gtimerge	MERGE two or more GTI tables into one	pdf	ChangeLog
	hkgtigen	Create Good-Time-Interval table from HK table data	pdf	ChangeLog
	orbit	Create a FITS timeseries ``HK-like'' file from the ODF Spacecraft Reconstructed Orbit File.	pdf	ChangeLog
	selectlib	Data Selection infrastructure library	pdf	ChangeLog
	tabgtigen	Create Good-Time-Interval table from time-varying data	pdf	ChangeLog