previous page button of browser opening on-rev server page

[paolo mazza]

Hi Mark,
 when I go back with then "previous page" button of the browser, the
cgi does not run again. The browser simply return the HTML recorded
in the browser cache.
I tried with Safary and with Firefox; both of them do the same thing.
 However, if I empty the cache before returning to the previous page,
the browser runs the cgi again.

Thanks
Paolo