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+	Keystroke Commands 
+
+?	Print help
+p	Print photometry for star nearest the cursor
+l	List the current psf stars
+a	Add star nearest cursor to psf star list
+f	Fit the psf
+r	Review the fit for all the psf stars
+s	Subtract fitted psf from psf star nearest cursor
+d	Delete psf star nearest cursor from psf star list
+w	Write the psf to the psf image
+z	Rebuild the psf from scratch
+q	Quit task
+
+	Colon Commands
+
+:p [n]	Print photometry for star n
+:a [n]	Add star n to psf star list
+:d [n]	Delete star n from psf star list
+:s [n]  Subtract fitted psf from psf star n   
+
+	Colon Parameter Editing Commands
+
+# Data dependent parameters which affect the psf computation 
+
+:scale	   [value]	Show/set the image scale (units / pixel)
+:fwhmpsf   [value]	Show/set the fwhm of psf (scale units)
+:datamin   [value]	Show/set the minimum good data value (counts)
+:datamax   [value]	Show/set the maximum good data value (counts)
+:matchrad  [value]	Show/set matching radius (scale units)
+
+# Psf computation parameters
+
+:psfimage   [name,name]	Show/set the psf image and groupfile
+:function   [string]	Show/set the analytic psf function
+:varorder   [integer]	Show/set order of psf function variability
+:nclean	    [integer]	Show/set number of cleaning iterations
+:saturated  [y/n]	Show/set the use saturated star flag
+:psfrad	    [value]	Show/set the psf radius (scale units)
+:fitrad	    [value]	Show/set the fitting radius (scale units)