to let users have LOCAL stored parameters, I use a .LOC extension on a table , and after loading the common table, I check for a .LOC file on the local machine, if so , I merge that data unique. 99% of the time, no .LOC file exists, but for that 1%, it is a simple solution!

I probably would never have developed this, but I had to control ticket printers, and Windows kept resetting the page length to 11 inches ! So I developed a printer selector that builds temp files and then dumps them to the required printer, avoiding the windows drivers! After solving THAT nightmare, the routing issues seemed simple