BUY ChainMaker 12.5.1
Upgrade to ChainMaker 12.5.1
Demo ChainMaker 12.5.1
more info
Price: 20 euros

select and/or compose contiguous lines, arcs, polygons and polylines, with adjustable tolerance
for non-touching objects.
New updated version 12.5.1 adds better handling of units in dialogs edit fields.