SYSGRAPH - Windows System Queue Loading Graphical Display

           Version 2.0, (c) Copyright 1988 Bill Crow, Hewlett-Packard Co.

           With acknowledgements for previous works by Charles Petzold,
           Barry Press and Alec Saunders.

           This program may be freely copied, modified and distributed
           for noncommerical use.  No warranty is expressed or implied.


HISTORY:   Windows Queue loading application for Microsoft Windows
           originally called SYSQUEUE and written by Barry Press, 
           adapted from FREEMEM.C written by Charles Petzold.  
           
           Graphical display added by Alec Saunders.  

           Renamed to SYSGRAPH to allow coexistence with SYSQUEUE.
           Rescaling features and About.. dialog box added by 
           Bill Crow, Hewlett-Packard Co.


OPERATION:

SysGraph displays the load in the Windows system queue in an icon at
the bottom of the screen.  The graph is updated every 1/2 second.
Additional system load is shown by dips in the graph.  

I liked Alec Saunder's graphical representation of the changes in
system load, but the Y-axis scaling was fixed well below the useful
range for my 20Mhz 80386 system.  Rather than just increase the value
of the fixed scaling, I considered a couple different ways to
auto-scale the graph.  Since I couldn't decide which way was the best
(continous auto-scaling, or scaling based on the largest recorded
value) I decided to implement both with a user option to select
between them.  

The graph will automatically rescale to accommodate the largest values
recorded.  Two commands are available on the system menu: 

        Rescale:  A one-time rescaling of the graph is performed,
                  based on the data points currently displayed.  This
                  command is only enabled when Auto Rescale is turned
                  off.  

   Auto Rescale:  This mode is turned on and off by selecting this menu
                  command.  When it is on, a checkmark is placed by
                  the menu item and the Rescale command is disabled.
                  When The option is enabled, the graph is continually
                  rescaled based on the displayed data points.
                  Otherwise, the scaling is only changed to
                  accommodate new maximum data points or when the
                  Rescale command is used.