! The SXG top grapher and other SXG nodes
SXG		#LockGrapher    #Spectrum X Gamma  	#SXGGrapher
about_sxg.html	#HTML-Node	#Spectrum X Gamma	#http://hea-www.harvard.edu/SXG/about_sxg.html
proposal_prep.html #HTML-Node	#Spectrum X Gamma	#http://hea-www.harvard.edu/SXG/Proposal_preparation.html
proposal_submit.html #HTML-Node	#Spectrum X Gamma	#http://hea-www.harvard.edu/SXG/Proposal_submission.html
http://hea-www.harvard.edu/SXG/iraf_sxg.html.ALT #Alias	#IRAF Alias	# iraf
http://hea-www.harvard.edu/SXG/xspec_sxg.html.ALT #Alias #XSPEC Alias	# xspec
http://hea-www.harvard.edu/SXG/pimms_sxg.html.ALT #Alias #PIMMS Alias	# pimms
http://hea-www.harvard.edu/SXG/shell_sxg.html.ALT #Alias #Shell Alias	# shell
http://hea-www.harvard.edu/SXG/xdir_sxg.html.ALT #Alias	#XDir Alias	# xdir
http://hea-www.harvard.edu/SXG/saotng_sxg.html.ALT #Alias #SAOtng Alias	# saotng
http://hea-www.harvard.edu/SXG/saoimage_sxg.html.ALT #Alias	# SAOimage Alias # saoimage

! access to data
pspc_data	#HTML-Node	#ROSAT PSPC Data	#ftp://legacy.gsfc.nasa.gov/rosat/data/pspc/processed_data
hri_data	#HTML-Node	#ROSAT HRI Data	#ftp://legacy.gsfc.nasa.gov/rosat/data/hri/processed_data