(Note: The change caused by this menu option is only 
visible by opening another hypertext file or by using 
a jump link to another file.)

The "Invert Hot Image" menu option sets a flag
which is used by the OnHandleShowCoolImage  
method of the HTDisplayBox component. This method 
is used to modify display of images. In this
case, if the flag is true, images are inverted
and then set for display. (This could be used to
mask images for security reasons.)

(Note: Assert methods normally are used to abort
all further processing of an action, while the
Handle Methods modify the processing. These
two methods can each be overridden in code by
direct assignment for Assert types and virtual
overriding for Handle types.)

