How does scripts find dummy objects in Max files?

So I was refreshming my self on vehicles, with the tribes 2 stuff, to make my first modle. I came across a mystery. In their max file they have 2 dummy objects contrail0 and contrail1. They are located at the wing tips and create a real nice effect. Ok no problem so then I started looking for some variable in the scripts called contrail0 or contrail1 but I couldn't find it. I found the contrail particles, emitters and where it is in the hard code but NO actual contrail0 or contrail1. Has things be rearrange in our hard code that I am reading things wrong? the main question for this is Where in the scripts are the dummy objects assinged various emmiters?
am I missing something can anyone please explain this?
Anthony