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2.4.4. The first para. Can be made clearer by saying: ... in that Variables contain values which MAY be populated or assigned as the result of actions or events within a Choreography Lifeline whereas.. In other words, a token denotes a value, while a variable refers to a container of a value, which in turn defines its state.
agreed on con call 15-feb-05: editorial
Tokens differ from Variables in that Variables contain values which MAY be populated or assigned as the result of actions or events within a Choreography Lifeline whereas Tokens contain information that define the piece of the data that is relevant
group notification of status change: http://lists.w3.org/Archives/Member/member- ws-chor/2005Jul/0004.html
no comments from group so closed confirmed: http://lists.w3.org/Archives/Member/member-ws-chor/2005Jul/0004.html