filter packages
	attfilter	Exposure-specific attitude data filtering and GTI creation	PostScript	ChangeLog
	dsslib	Data Subspace Library	PostScript	ChangeLog
	epchain	Script for the EPIC PN events pipeline processing and filtering	PostScript	ChangeLog
	epframes	Reformats EPIC PN events list for subsequent off-line analysis	PostScript	ChangeLog
	evlistcomb	Merges event lists from all CCD/nodes into a single event file	PostScript	ChangeLog
	evselect	Filters event lists and extracts images, spectra, timeseries and histograms	PostScript	ChangeLog
	selectlib	Data Selection infrastructure library	PostScript	ChangeLog
	xmmselect	Interactive data selection and accumulation of products	PostScript	ChangeLog