Rich:
Took me a while to figure out how to do it but here are a few screen shots of my 3rdPlanIt track plans.
The first is showing all the components of the plan except for the staging area:

I can’t seem to copy the layer menu but here is a partial list of what the colours represent:
Blue track - main line
Grey track - secondary track
Green track - arrival/departure track
Pink track - drill track
Red track - caboose track and program track
Brown track - HOn30 mine track
Red structure outlines - structures that I have acquired
Purple structure outlines - structures to be acquired
Brown circles - tall yard lights
Green circles - short wood pole yard lights
Grey circles - metal street lights
Green lines - these simply show dimensions from one point to another point. I use them for checking things like reach in distances, aisle width…whatever
Red numbers - rather then type in descriptions for all of the structures I have just numbered each of the structures. I have a listing (done in pencil by the way) of what all the buildings are and what stage they are at in construction
Black numbers - control panels. I have a diagram for each control panel:

Here is a view of the staging track only:

Here is a 3D view with trees added in to give an idea of the topography:

I hope that gives you a bit of an idea of what the CAD program can do.
Dave