Hi Dave and welcome to the forums. RH does have a facility
whereby you can enter a date/time via the Insert | Field menu tiem.
You could even add this to a topic template as part of a text
string (e.g. last updated on
date). The problem would be to automate this. You can
automate it across the board but this wouldn't distinguise between
just opening up a topic to review the content. I use a macro editor
such as
Macro Express to achieve
what you want. If you don't want to buy such software you could
enter template text such as "Last updated on" and then add the date
via the Insert | FIeld | Date menu item each time a topic is
created/edited.