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Hi Linda,
This is something we are investigating: it comes down to how printers interpret line widths, in particular 0 width, whether (and how) we should enforce a minimum width in device-space (i.e. the printed page), who decides, and what that width should be.
If we send a 0 width line to a printer, the printer will output it as finely as possible, so the same line will look different in print, depending on the printer. The better (or, more accurately, the higher-resolution) the printer, the thinner the line could print, with a 300dpi printer outputting at 1/300th of an inch, and a 1200dpi printer outputting at a quarter of that.
However, we also need to consider non-zero line widths. For example, if a line has a width of 1/48th inch, but the drawing has been scaled down to 1 100th of its size for printing (conversion to device space) do we try to output a 1/4800th inch-thick line, or impose a minimum here too. And how do we define that value?
We're looking, therefore, at the best way to allow users to do what they need, and the best way to implement the UI and logic. The ramifications are significant so please bear with us.
Kind regards, Rob Robinson Stardraw.com
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