a list of message subject fields, with message #s prepended
true if they should be grouped by replies
a sparse message number list to be checkmarked
-- part contents for background part 4
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This XFCN is very specific to The NetNews Stack, and is not intended for general use. It is listed here for completeness only. If you need to know more about the XFCN, see the comments in the source code and/or look at how the function is used in The NetNews Stack.