[messages] [Module Design] Value for Undefined properties

Flaney flaney at yahoo.com
Tue Jul 12 01:56:05 MST 2011

When a piece is clicked, its property _Selected _= true. If the piece is
moved using a _SendToLocation_ trait, the property _Selected _= ???.
It's not false; How does one test these kinds of properties? _Selected
_= null? 

What does Vassal do here?



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