Additional editing operations are available for complex objects such as blocks,
hatches and polylines.
Disassociating
compound objects (Explode) It
is possible to explode a compound object, such as a polyline, a
region or a block reference, converting it into single elements. The
exploding function is hierarchic, meaning that it subdivides one complex element
in other inferior elements (Region Polylines Arcs
and lines).
Polylines 
