... sketchboard, and set the width of the background slightly less than the required track centres. For example, the minimum spacing for 6ft way is 11ft-2in centres, or 134 inches (44.67mm). So if you set a track background at 131 inches wide, there should be a 3 inch gap between track backgrounds, or a 1mm gap in 4mm/ft scale. Setting a bright page colour (e.g. red) makes this gap easily visible. Zoom and pan all over the track plan to see it: 2_251100_390000001.png I added some dummy tracks at 44.67mm centres, for comparison with your track plan. You can see that there is no 1mm red gap at A which probably needs fixing, and a reduced gap in places at B which may be acceptable, although not strictly prototypical. You should always try to use the make double-track and make crossover tool functions, so that the required spacing is created automatically. This isn't always possible of course. If you tick the box to show the above on the trackpad, you can ...