I've got a combination of two types of entity - '2D polyline' & 'polyline'.in a dwg.
For some reason they display different context menus when I select them & right-click.
They were created the same way I think, individual lines joined using pedit.
I've got the PLINETYPE system variable set to 2 so they're all optimized to 2d.
When I use the CONVERT command it converts the '2d Polylines' into 'polylines'. Which is what I want.
However, I still don't understand how I created the '2D polylines' & why , having PLINETYPE set to 2 it didn't convert when I reopened the dwg.
I still don't understand what the difference between the two is. They have no Z values & are in the world UCS plain, just at different elevation, which, as I understand it, doesn't make any difference.
Thanks for your help.