• Added unjoined and unmatched options to the -join command, for inspecting unjoined records from the source and destination tables.
• Added a constraint to Visvalingam simplification to remove an ambiguity in the order of vertex removal when several vertices have the same effective area.
• Added cleanup option to -clip and -erase commands, which removes slivers created by clipping (before, slivers were removed by default).
• Rename cartesian option of -simplify to planar.