Help for the Adjust Display Widget

     The user controls the main and ROI image display scaling in the
Adjust Display Widget.  The parameters and functions to control the
display are:

  - Display Bias (in linear scaling units) is the bias to be added
    to the display image in order to compensate for negative and
    zero pixel values when displaying data with logarithmic or
    square root scaling.  Any pixel values less than or equal to
    0. after the bias is applied are clipped in the display.

  - Plot Minimum and Maximum are the minimum and maximum range of
    values to be displayed.

  - Scaling choices:  linear 
		      logarithmic (base 10)
		      square root

  - Auto Scaling is an option that allows idp3 to determine the optimal
    values for plot minimum and maximum.

  - Screen Offsets: Xoff and Yoff.  These offsets are applied to the
    display so that the effective image display origin will be at the
    position of these offsets.

  - Color button activates the RSI IDL Load Color Table widget.  The user
    may select a color table (the default is black-white linear), alter 
    the image stretch (both top and bottom), adjust the gamma correction, 
    and other options outlined in the load color table widget help.  If
    the user specifies colors for the ROI Box, Radial Profile Circle, 
    Cross Section line, etc, these colors will be eliminated when a
    color table is loaded.  Also, if colors have been specified for
    the graphics, modifying the display bottom stretch or the gamma 
    correction will move these reserved colors into the image display 
    with unsatisfactory results.  When using colors for the graphics 
    it is better to stretch the display with the plot min and max values.

  - Linux Color Button activates a similiar widget to the RSI Load Color
    Table Widget but it is specifically for Linux displays.  Under Linux
    color table and stretch changes are not automatically updated in the
    display by the X-Windows server.  The Linux Load Color Tables gives
    the capability to interactively update the display as changes are
    made through the widget, itself.  This widget was developed by David
    Fanning.

 -  Redisplay erases and displays the image in the main display.

 -  Help displays this file.

 -  Done closes the widget.