you REALLY found this parameter in the server.conf?
I need to check tomorrow first thing, noticed this while I was on the verge of leaving the office.
Apparently and according to a quick check look-see, this parameter has been obsolete for decades - I found a hit on 7.5 where it wasn't working and it's actually last time documented in the 7.1 sysadmin guide. We can assume that it won't have any effect, same as it didn't in 7.5 where the incident was reported.
For full info on what it DID but apparently doesn't do anymore:
According to the system admin guide on page 236 if set to TRUE, the PPM Dashboard displays a message as it loads a page when this parameter is set to true.