... each to form a pair, but still looks a bit odd. All suggestions welcome. By the way, this change in the generator maths also applies to a turnout template and allows the turnout-road radius to go negative when the V-crossing angle is flatter than the switch heel angle. I can think of no practical use for such a turnout, but someone somewhere may find a use for it as a partial template? Here for example is an A-20 turnout -- and very odd it looks: 2_131601_520000000.png If you try an A-20 in the current versions of Templot you will get a very different result. regards, Martin. posted: 13 May 2011 22:22 from: Paul Boyd Hi Martin I'd be inclined to go with the "diverging/converging" option. To be honest though, I don't really mind what it's called because it'll be pretty obvious to the user if it's what they want when seeing it on the screen, won't it? If it's called "positive" and the diamond road curves ...