Objects to locate lines, arcs, and polylines that have
a start point and an end point but have zero-length, or are missing
an end point, and erase them. The Zero-Length Objects cleanup
action does not evaluate closed polylines.
Zero-length objects can
be introduced inadvertently when importing data from other applications
or when digitizing map data.
NoteAutoCAD Map 3D does
not refer to a tolerance value when identifying zero-length objects.