/INSIDE – Polygons with lines completely inside (not
touching boundary).

/OUTSIDE – Polygons without lines inside, only outside.

/OVERLAP – Polygons with lines overlapping the boundary.

/INSIDETOUCH – Polygons with lines inside, touching
the boundary.

/OUTSIDETOUCH – Polygons with lines outside, touching
the boundary. 

/SPLIT – Cuts polygons in two pieces when a line
is overlapping the boundary.

If none of these qualifiers are used, /INSIDE is the default.