Hi,
Just thought I'd share my comment on this subject since it always bothered me that I couldn't ever keep track of my points either:p
What I started doing was load my prints/schematics in PS change it to gerey scale and then change the level to 128.......it made the prints/schematic blend in with the view port.........of course I use the LW default grey so I guess it would have to be different for that kinda situation
Just my thoughts though