Help for IDP3 Show Images Widget

   The IDP3 Show Images Widget lists all of the images that are currently
loaded and controls many aspects of their processing.  There are a number
of functions that may be applied to ALL images including:

    ON       - set all images ON
    OFF      - set all images OFF
    MaskON   - set all image masks ON (if loaded)
    MaskOFF  - set all image masks OFF
    FlipY    - Flip all images about the Y-axis
    Add      - set all image dispositions to Add
    Subtract - set all image dispositions to Subtract
    Ave      - set all image dispositions to Ave
    Min      - set all image dispositions to Minimum
    Pos      - set all image dispositions to Positive, negative value pixels
	       are set to 0.
    ABS(Neg) - set all image dispositions to Absolute Value(Negative Pixels),
	       positive value pixels are set to 0.
    Resample - set resample factor for all images according to the IDP3
	       Resample All widget.  Resample factor may be increased or
	       decreased by factors of 2, between 2 and 16 or 0.5 to 0.0625.
	       Any resample adjustment is cumulative.

    Pad      - set image pad for all images with the Enter border pad widget.

    Rm Pad   - set image pad for all images to 0.

    Underneath the list of function buttons is the name of the current
reference image.  The number of the image in the list is also included 
since a single image may be loaded multiple times into IDP3.  An "*" 
denotes the reference image in the list of names.

    Below the label of the reference image name is a scrollable list of
images that are loaded.  Each image has a line of functions in the list.
Clicking on the image name causes the reference image to move to that
image.  On, MaskOn, and Flip Y are radio buttons to select these functions.
The image disposition button is a menu of the possibilities including those
listed above for All images and the following:

    1/image   - inverts the current image.
    Div       - divides the current image into the image display.  This
		cannot be the first image that is turned on because at
		that point the image display would be all zeroes.
    Mul       - multiply the image display by the current image.  This
		cannot be the first image that is turned on because at
		that point the image display would be all zeroes.
    Abs       - take the absolute value of the current image and add the
		result to the image display.

    The Hdr and CrdXY buttons activate a header viewer and a widget to
display the current centroid solution (with associated right ascension
and declination) for the current image.

    Other functions at the top of the widget include:

    Hold Processing - Each time any change is made to one of the images
		      in the list the image display is recomputed and
		      redisplayed.  If many changes are desired it can
		      be more convenient to hold off on recomputing the
		      image display until all changes are made.  Selecting
		      Hold Processing will accomplish this.  The user 
		      must deactivate the Hold Processing when finished
		      with his changes in order to update the display.

    Help            - Displays this file.

    Done            - Closes this widget.  The widget may be reactivated
		      by loading additional data or selecting the Show Images
		      function in the Images menu of the Main Display.