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The answer produced by addFirst: is the object added; it is not the
receiver. Thus, the answer produced by the following cascaded expression
is 720—the answer produced by the final addFirst: message
in the cascade; it is not the new ordered collection:
Workspace Transcript show: (OrderedCollection new addFirst: 570; addFirst: 720; addFirst: 640; addFirst: 720) printString; cr Transcript 720