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• |
Insures that
each message in the expression is
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sent after the
previous message has been
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processed. It
also allows that the return value of
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one message
invocation may be used as an
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argument for a
later invocation in the
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expression.
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Example:
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a1<-m1()
@ a2<-m2( token );
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Send m1 to a1 and
then after m1 finishes, send the result with
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m2 to a2.
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