Original Question:
See attached image.  We have a 3" diameter router bit (typ used to plane the table) that we also use to create what would otherwise be a "pocket" to save time on the machine.  On a straight line PLINE, with the options in Parameter 4 set to 0;0;0;0;0, it shows up as a squared off rectangle, which is misleading.  Typically, I don't care about it not showing a rounded look at the end of the PLINE, but due to the large diameter on this one, I'd prefer that it did.  Otherwise, I'm afraid we'll end up too close to the edge and accidentally create a bad part.  I thought that I could achieve this using a 3 as the first option in parameter 4 (where you say to draw and/or machine), but I have a 3;0;0;0;0 there now, and it still gives the same squared-off result shown in the attached image.

Answer:
See my last post on this thread for detailed response.
In short, use a combo of a router bit dwg and option 1 in parameter 5 set to a 3.