I didn't say it would make a difference for the extend command, I believe it was Richard who had found it helped him. (BTW, on/off and 0/1 are essentially the same, one is english the other computer entry for the same thing.)
I think the command that you are looking for is: PLINETYPE
Plinetype controls the use of optimized 2-D polylines in IntelliCAD. You can save disk space and memory by using the optimized format. PLINETYPE controls the use of optimized polylines for creating new polylines using the PLINE command and converting previously created polylines.
0 = IntelliCAD does not convert previously created polylines when opening the drawing file. Any new polylines created using the PLINE command are not optimized.
1 = IntelliCAD does not convert previously created polylines when opening the drawing file. Any new polylines created using the PLINE command are optimized.
2 = IntelliCAD converts previously created polylines when opening the drawing file. Any new polylines created using the PLINE command are optimized.
Type: Integer
Saved: In the registry
Range: 0 to 2
Default: 2
I still do not know if this will help solve your Extend, Fillet or Trim issues. (I doubt it personally).
(BTW, on/off and 0/1 are essentially the same, one is english the other computer entry for the same thing. Use which ever the command prompt permits.)
Cheers,