... " with the hourglass/ spinning roundel showing while saving, but if you wait long enough it does come back without error. But that's just my system, I wouldn't want to guarantee that Templot can handle such large files on all systems. There has to be a limit somewhere -- the difficulty is in specifying what it is, because all systems are different. Here is a tiny bit of it on the trackpad with a turnout aligned over it. I hope this small section falls within fair dealing for copyright purposes: 2_040506_390000000.png I was pleasantly surprised to find zooming and panning on the trackpad quite fast and smooth. It wouldn't transfer to the sketchboard in the default metafile format -- I got a streaming "out of memory" error, not really surprising. But by changing to the manual option to add the trackplan item in bitmap format, and using the boundary rectangle* option (the green outline above), it did work. This is the sketchboard view: 2_040506_400000001.png However, I couldn't get it into the PDF or print outputs. ...