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: set array’s row as marking precedence
: set array towards vertical direction as
marking precedence
: Unidirection marking.
: Bidirectional marking
I/O Control condition: The system reads the
input port first, and then compare whether the
current input singal is as the same as the object’s “I/O Control condition”, and if it does, the
Figure 2-15 Array (X=2, Y=3)