... making the screen zoom and pan response much slower than it need be. I guess you made that plan mostly by joining together individual templates, as might be done in "pick and place" track plan programs? That's not the way Templot works for best results. You might like to watch this video, and notice that separate templates are never joined together: http://templot.com/martweb/videos/flash/starter/em_starter.html Looking at your plan there are several places where you have an instant reverse curve: 2_292131_530000000.png That is very rarely found on the prototype, except perhaps in cramped yards. Apart from looking unprototypical it can also cause rough running and sometimes overthrow and coupling problems. Reverse curves always have a length of straight between them, or else they transition smoothly from one direction to the other in an S-curve. Generally in models we never have enough space, so inserting a length of straight between reverse curves isn't always feasible. But Templot makes it easy to create smooth S-curve transitions in place of reverse curves ...