Playing around with RTS 7.0, and came up with a kind of basic layout for an N scale railroad.
outer basic loop, at the left end of the loop is a complete circle (helix?) moving up one level. It parallels the outer loop around the corner after the climbing loop for a short bit, then curves towards the "top" of the outer loop. Midpoint at this juncture it crosses over one side of an inner loop. The inner loop is another oval, with one spur? coming off. The inner loop goes down at the left side to a turnout that you can either go back up the backside of the inner loop, or to a turnout that goes to the outer loop.
It's kind of a visualization of a small remote mining town (spur on the inner loop) on a plateau near a mountain (Where the helix? would be.) It's intended to be a single train layout, in a somewhat limited space.
Anyone interested in taking a peek at the layout, or commenting on it? Given that I haven't figured out how to put in bridges, etc. yet. I'm also trying to figure out xtrkcad too. I can email the .RAL file.