USER GUIDE FOR TEST ANALYZER:

The test analyzer has the following buttons:

Compare One Signal-allows the user to select
one signal from each display window (the names of these
signals do not have to be the same) and compare the
values of these two signals.  Areas of differences
between signals are indicated with purple highlighting on the
signal in the window from which test analyzer was enabled.

Compare Signals (Same Name)-allows the user to select 
one or more signals from one display window and
to compare these signals to signals with the same 
name in the other display window.
Signals that do not compare are indicated in the window
called "Test Analyzer Results".  This window allows the
user to select signals which have miscompared, and
to display these signals.  

If the signals currently are not on the
display window they will be added along with the
highlighted areas that have miscompared.  
Compare list of signals, and Compare All Signals are examples
of operations where the signals may not be currently
displayed.

Compare List of Signals-enabling this button brings up
a window from which a list of signals made with "save"
are compared between the VCD files in the two display windows.  
Signals which miscompare are put into the window 
"Test Analyzer Results". 

Compare All Signals- compares all signals in the two
VCD files opened by the two different Undertow windows.

Specify Timing Window-brings up a window which allows the user to
select either the leading or trailing edge of a clock, 
the clock signal and two points on either side of
the leading edge or trailing edge of the clock.  
To allow this timing window to be effective, "set" should be enabled.  
If the plus and minus values are set, then the comparison takes
place from the point of the minus setting through to the point
of the plus setting around the clock edge.
