Where to place version and confidentiality notices

Hi,

We have a requirement that each document has a current version number
and a confidentiality notice (like "Internal Use Only", ...).

What tags in docbook do I use for these - version number &
confidentiality notice?

I see the "revnumber" tag can be used only inside a
revhistory/revision tag hierarchy. Otherwise it was suitable for the
version number.

I also need to display the version number in the title page (which can
be done by customizing the title page template) & the confidentiality
notice to appear in the footer of every page (which can be done by
customizing the footer.content template).

- Navin