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Subdialog Processing

Title: Memory Leaks?
    my question pertains to calling a subdialog located in an external document. I found that if both the subdialog's document and calling dialog's document reference the same application root document, the application variables are undefined in the scope of the subdialog.
Is this a bug? Or perhaps I'm misinterpreting the spec here. Going through the code, my guess is that when going into a new scope (such as when executing a subdialog), the application root variables must be copied into the new scope, otherwise their values are not preserved in that scope.
Your feedback is appreciated,
Michael Tsu

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