Question 1034408
i'm not sure what the logic would be.
however, here's a webiste that might be helpful.
you may be able to contact the author of that webpage.
his email is in the link.
<a href = "http://www.jaapsch.net/psion/" target = "_blank">http://www.jaapsch.net/psion/</a>
if theere is software in the machine that's doing what you are showing, then you may be able to print it out and discover what the logic is.
give it a shot.