Trackmarks
Hi Sardon,
As john259 says, "trackmarks can be given meaningfull names" They can also be re-numbered. I usually divide a layout in to sections and number the trackmarks according to the section they are in. For example the first section I renumber has trackmarks numbered from 1 - 19, odd numbers heading south even numbers heading north. Next section numbers from 20 - 39 odd and even numbers as before, next section 40 - 59 etc. etc.
This means when I check where each driver is by hovering the mouse pointer over his icon I can tell what section he is in and where he is going to next as well as if he is loaded or empty.
Hope this helps,
Bill69.