This is something I stumbled across.  I would like to offset a line by 100 mm but have the "units" and dimension in inches so for the distance I put in 100/25.4.  The result is 4, not 3.973...  DraftSight handles the division but seems to ignore the decimal.  Right now I just typed in the real result but I'm wonder if there is a setting that I could not find or in my syntax in incorrect.