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Since I am based in the U.S. we work almost exclusively with English units in drawings. But, sometimes we need to incorporate imported equipment that only gives the dimensions in Metric units. Of course, I can manually convert to Metric. Another option is to draw the items on an new drawing, with the units defined as Metric.
My preference would be to have the option to specify the units at the command prompts. So, creating a circle, 1 meter radius would be;
: CIRCLE 2Point/3Point/TanTanRad/Arc/Multiple/<Center of circle>: 0,0 Diameter/<Radius>: 1m
Is there perhaps a utility that will permit me to enter units that my drawing is not set to use? I am not talking about just a special CIRCLE command, but for everywhere the user is able to type in a dimensional value. I also realize that such a utility cannot probably be a simple LISP routine, since it must have access to nearly every user input screen. So, perhaps there does have to be a compromise. In my case, I suspect Circle, Rectangle, Line, and Offset would be the main places I would use alternate units. So, perhaps re-defining just those command would be sufficient most of the time.
(Hopefully the formatting of the message will work. I spent over 5 minutes on my command line prompt formatting. It seems that the forward slash after the word Diameter on the command prompt is incorrectly interpreted)
-EDIT By formatting my command line prompts as code (with the required empty line before it) solves the formatting problem. It colored the keywords as code, but that does not interfere with its readability.