Recommended way to markup tables with internal footnotes?...

Hi,

My project is using the HTML table model with DocBook
V5.0 to digitize a bunch of documents that feature
large and sometimes complex tables.

Some of these tables have "internal" footnotes where
a table column heading or a table cell will be have
a footnote reference "(a)", "(b)" etc.  These footnotes
are then printed in full at the end of the table, but
not at the foot of the page as with regular footnotes.

Can anyone suggest a semantically consistent way to
handle these footnotes and keep them attached the
correct table?

Thanks in advance,

Stu

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Stuart Hungerford
ANUSF Data Intensive Projects