spectral packages
	arfgen	Generates an ancillary response file	pdf	ChangeLog
	backcorr	Makes a background spectrum appropriate to the accumulation region of a source spectrum	pdf	ChangeLog
	backscale	Calculation and setting of the BACKSCAL keyword	pdf	ChangeLog
	ecoordconv	Converts a position between coordinate systems	pdf	ChangeLog
	eradial	Extraction of radial profile and comparison with PSF	pdf	ChangeLog
	eregionanalyse	Optimisation of point source extraction circle	pdf	ChangeLog
	especget	Creation of source and background spectra and associated ARF/RMF	pdf	ChangeLog
	especplot	Produces plots of the net source and background spectra for EPIC MOS/PN	pdf	ChangeLog
	eupper	Finds upper limit at a point in an image	pdf	ChangeLog
	evselect	Filters event lists and extracts images, spectra, timeseries and histograms	pdf	ChangeLog
	om2pha	Extraction of OM filter rates into a spectral file	pdf	ChangeLog
	psfgen	Generate PSF from ccf	pdf	ChangeLog
	qpbselect	quiescence particle background product creator	pdf	ChangeLog
	rgscombine	Combines multiple paired Spectrum and Response Matrix files and produce one final result file for each	pdf	ChangeLog
	rgsfluxer	Combines and fluxes RGS spectra	pdf	ChangeLog
	rgsregions	Constructs RGS event selection regions	pdf	ChangeLog
	rgsrmfgen	Constructs an RGS response matrix file	pdf	ChangeLog
	rgsspectrum	Extracts foreground and background spectra	pdf	ChangeLog
	rmfgen	Generates an OGIP-compliant RMF file	pdf	ChangeLog
	selectlib	Data Selection infrastructure library	pdf	ChangeLog
	specgroup	Grouping of a spectrum	pdf	ChangeLog
	xmmselect	Interactive data selection and accumulation of products	pdf	ChangeLog