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THANKS VERY MUCH @Steven P, it works for me.

Post more detail what your asking for, my crystal ball is out being polished.

There is a borehole extension available for Autocad put out by Autodesk may be worth looking at. Can not remember exact name. Your home work is do some googling I would have to also to find it again. "Borehole Extension Autocad" Just a bit more you can make a csv file of your points and then read that file into a pline command fairly easy again Google, ok now for the real smart way, open the excel file with the points say 2 columns, run a lisp in Acad it will ask you to select range in excel, wow pline made. The excel stuff needs a bit of learning 1st but there is a wealth of examples out there.

OSMode: set it to 0 works but of course reset the value afterward. _non is a little less typing I think Speeds: All well and good if you are dealing with 1000s of objects, most times I am not so am not worried. I use more time in the day talking to the receptionists in the office than the millisecond longer it takes to draw a line. I do what I can get to work. Entmake and command - I think we all started out making LISPs with command line, get into at and gives a lot more control, however we all know how to do stuff using commands and that is a nice way to start

"error: Vl-load-com not supported on MAC" is your problem if I remember correct the VL functions do not work on the Mac version. So sorry code will not work.