[Templates] Last-modified date

[Keith G. Murphy]

This has probably been asked before, but I just subscribed to the list,
and the TT documentation seems to be temporarily unavailable on the web
(haven't downloaded the product itself yet).

Is there an (easy) way in TT to generate and include a last-modified
date on all included templates?

I.e., get the latest of the last-modified dates on the main template and
all included templates on down.  So that you can show:

"This page last modified xx/xx/xxxx xx:xx:xx"

in a way that really reflects the last thing that was actually changed.

TIA.