Repatch (from linux) of OSX IRAF

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+		SENSFUNC: Determine Sensitivity Function
+
+SUMMARY:
+
+? Help            a Add data         c Composite data      d Delete data
+e Extinction      f Fit (overplot)   g Fit (redraw)        i Info 
+m Move data       o Original data    q Quit                r Redraw
+s Shift data      u Undelete data    w Change weights      I Interrupt
+
+:function [type]    :graphs [types]     :images [images]   :marks [types]
+:order [value]      :skys [images]      :stats [file]      :vstats [file]
+:colors [colors]
+
+Graph types: a=(resid,airmass), c=(composite,lambda), e=(extinction,lambda)
+	     i=(Fluxed image,lambda), l=(Log of fluxed image, lambda),
+	     r=(resid, lambda), s=(Sensitivity,lambda)
+
+
+CURSOR KEYS:
+
+?	Print help
+a	Add a point at the cursor position
+c	Toggle composite points
+d	Delete point, star, or wavelength nearest the cursor
+e	Toggle residual extinction correction
+f	Fit data with a sensitivity function and overplot the fit
+g	Fit data with a sensitivity function and redraw the graphs
+i	Print information about point nearest the cursor
+m	Move point, star, wavelength nearest the cursor to new sensitivity
+o	Reset to original data
+q	Quit and write sensitivity function for current aperture
+r	Redraw graph(s)
+s	Toggle shift of standard stars to eliminate mean deviations
+u	Undelete point, star, or wavelength nearest the cursor
+w	Change weights of point, star, or wavelength nearest the cursor
+I	Interrupt task immediately
+
+
+COLON COMMANDS AND ARGUMENTS:
+
+:flux [min] [max]  Limits for flux calibrated graphs (INDEF for autoscale)
+:function [type]   Function to be fit to sensitivity data.  The types are:
+			chebyshev - Chebyshev polynomial
+			legendre  - Legendre polynomial
+			spline1   - Linear spline
+			spline3   - Cubic spline
+:graphs [types]    Graphs to be displayed (up to four).  The types are:
+			a - Residual sensitivity vs airmass
+			c - Composite residuals and error bars vs wavelength
+			e - Extinction (and revised extinction) vs wavelength
+			i - Flux calibrated image vs wavelength
+			l - Log of flux calibrated image vs wavelength
+			r - Residual sensitivity vs wavelength
+			s - Sensitivity vs wavelength
+:images [images]   Images to flux calibrate and plot (up to four images)
+:colors [colors]   Line and mark colors to use for line and included, deleted,
+			and added points.  The colors are specified as four
+			whitespace separated integers between 1 and 9.
+:marks [marks]     Mark types to use for included, deleted, and added points:
+			point, box, plus, cross, diamond, hline, vline,
+			hebar, vebar, circle
+:order [order]     Order of function (polynomial terms or spline pieces)
+:skys [images]     Sky images for flux calibration (optional, up to four images)
+:stats [file]      Statistics about standard stars and sensitivity fit
+:vstats [file]     Verbose statistics about standard stars and sensitivity fit
+
+
+EXAMPLES:
+
+:func spline3		Select cubic spline function
+:g srae			Graph sensitivity, residuals, airmass, and extinction
+:g sii			Graph sensitivity and two images
+:i n1.0004 n1.0008	Set first two images to graph (the defaults are
+			    taken from the standard star list)
+:skys n1.0005		Subtract this sky image from first image for calibration
+:colors 2		Change only the line color to 2
+:colors	2 5 4 3		Change the line and mark colors
+:m plus			Change the mark type for included points and don't
+			    change the deleted or added point mark type
+:stats			Print statistics to terminal
+:vstats stdstats	Print verbose statistics to file