"Note: the Bath context set will be depricated when
the bib context set is complete. " That's based on a decision from an SRU meeting a few years ago.
The bath set (http://www.loc.gov/standards/sru/resources/bath-context-set.html)
cannot be depricated now (I'm quite sure nobody would
disagree), if ever. The note should probably have said "will be depricated
when the bib context set becomes widely implemented". Even then though,
there will remain legacy implementations of bath. So I propose to remove
the note and we can revisit the issue later.