IMEDIT CURSOR KEYSTROKE COMMANDS
 
	?	Print help
	:	Colon commands (see below)
	<space>	Statistics
	g	Surface graph
	i	Initialize (start over without saving changes)
	q	Quit and save changes
	p	Print box of pixel values and statistics
	r	Redraw image display
	s	Surface plot at cursor
	t	Toggle between minimum and maximum search
	+	Increase radius by one
	-	Decrease radius by one
	I	Interrupt task immediately
	Q	Quit without saving changes
 
The following editing options are available.  Rectangular and line regions
are specified with two positions and aperture regions are specified by
one position.  The current aperture type (circular or square) is used
in the latter case.  The move option takes two positions, the position
to move from and the position to move to.
 
	a 	Background replacement (rectangle)
	b 	Background replacement (aperture)
	c 	Column interpolation (rectangle)
	d 	Constant value substitution (rectangle)
	e 	Constant value substitution (aperture)
	f	Interpolation across line (line)
	j	Replace with input data (rectangle)
	k	Replace with input data (aperture)
	l 	Line interpolation (rectangle)
	m	Copy by replacement (aperture)
	n	Copy by addition (aperture)
	u	Undo last change (see also 'i', 'j', and 'k')
	v	Constant value substitution (vector)
	=	Constant value substitution of pixels equal
		    to pixel at the cursor position
	<	Constant value substitution of pixels less than or equal
		    to pixel at the cursor position
	>	Constant value substitution of pixels greater than or equal
		    to pixel at the cursor position
 
When the image display provides a fill option then the effect of zoom
and roam is provided by loading image sections.  This is a temporary
mechanism which will eventually be replaced by a more sophisticated
image display interface.
 
	E	Exapnd image display
	P	Pan image display
	R	Redraw image display
	Z	Zoom image display
	0	Redraw image display with no zoom
	1-9	Shift display
 
 
			IMEDIT COLON COMMANDS
 
The colon either print the current value of a parameter when there is
no value or set the parameter to the specified value.
 
angh [value]		Horizontal viewing angle (degrees) for surface plots
angv [value]		Vertical viewing angle (degrees) for surface plots
aperture [type]		Aperture type (circular|square)
autodisplay [yes|no]	Automatic image display?
autosurface [yes|no]	Automatic surface plots?
buffer [value]		Background buffer width
command [string]	Display command
display [yes|no]	Display image?
eparam			Edit parameters
graphics [device]	Graphics device
input [image]		New input image to edit (output is same as input)
output [image]		New output image name
radius [value]		Aperture radius
search [value]		Search radius
sigma [value]		Noise sigma (INDEF for histrogram replacement)
value [value]		Constant substitution value
width [value]		Background annulus width
write [name]		Write changes to name (default current output name) 
xorder [value]		X order for background fitting
yorder [value]		Y order for background fitting