Can they be made invisible and still exist to direct AI ?The aprons of the airport I try to build (in the boondocks :-)) are tangential to the runway and made of leveled earth. I want to be able to direct AI aircraft but not see the path and hold short yellow lines to appear.thanks

Right click (Ctrl click for multiple lines) the blue line that connects the nodes and that will bring up a property sheet where you can turn them off and do a lot of other things. You can control the HS markings by adjusting the width of the taxiway it's connected to.(same property window) Hope this helps,Mikewww.aimadeeasy.comwww.flightontario.comI'm confused. Wait...maybe I'm not!

Thank you Mike, appreciated.