... to deal with. I got the procedure working just in time but had to go back in the late morning to tidy it all up and make it presentable for the future. Jim. posted: 22 Feb 2018 22:18 from: Martin Wynne Jim Guthrie wrote: What coders might want to see is your code that generates the rail and sleeper lines. Hi Jim, OK, here is some of that. First a bit of explanation. The core turnout calculations take place on a left-hand straight turnout: 2_221547_480000000.png All the dimensions for this are global variables calculated by a routine called gocalc (the generator). This is called many, many times while Templot is running. For example if you are adjusting the crossing angle with F9, it will be called every time Windows reports the mouse having moved one or more pixels on the screen. The variables are global so that they can be used anywhere in Templot if needed. For example the variable bnx is the x dimension to the blunt nose, g is the track gauge, ...