Start by selecting and dropping in the ProToolz Curve template from the Objects tab. Does not apply to all versions, if your version has no region window, use Filter and 3dtrains
Note: The following colors are used for the various radii of the ProToolz Curve template:
Yellow = 120 Meter Radius - Branch Lines and Industrial Spurs
Blue = 180 Meter Radius - Mainlines and Branch Lines
Red = 240 Meter Radius - Visually Prototypical Mainlines
Tip: For spiral easements, position the template slightly offset from alignment of the mainline. In the picture at right, this shows that the template was moved slightly upwards (roughly the equivalent to 2-meters, or 1/5th of a square). Some trial and error is needed before getting it right, but the end results are well worth the effort (and making your passengers happy!).
And there you have it. A baby-smooth curve, and the whole process took only a few minutes! As Rob at Auran would say: "...and that's all there is to it!"