On the title/subtitle issue I invoke the first rule of granularity
(stated here for the first time): More is better. That is, I don't
think I've ever regretted chopping up my metadata into too many pieces,
but I have frequently regretted not doing so. The main problem I see is
that use of a subtitle field is basically unenforceable, and will
therefore undoubtedly lead to uneven application. If I cannot be
assured that all records with which I must deal use the subtitle field
whenever appropriate, then I will be unable to consistently treat the
subtitle differently than the title (e.g., place below the title in
smaller type, etc.), which will in some cases render the separate field
moot. But having said all that, I would still be in favor of a subtitle
field, since without the capability of identifying the subtitle we will
render impossible some display and processing options.
Roy Tennant