buffer|POLYGON((1 0,0.707107 -0.707107,0 -1,-0.707107 -0.707107,-1 0,-0.707107 0.707107,0 1,0.707107 0.707107,1 0))
geomunion|MULTIPOINT(0 0,1 1)
convexhull|POLYGON((0 0,0 10,10 10,10 0,0 0))
relate|F0FFFF102
relate|t
relate|f
disjoint|f
touches|t
intersects|t
crosses|f
crosses|t
within100|t
within101|f
within102|f
within103|f
within104|f
within105|t
within106|t
disjoint100|f
disjoint101|f
disjoint102|t
disjoint103|f
disjoint104|t
disjoint105|f
disjoint106|t
disjoint150|f
disjoint151|f
disjoint152|t
disjoint153|f
disjoint154|t
disjoint155|f
disjoint156|t
intersects100|t
intersects101|t
intersects102|f
intersects103|t
intersects104|f
intersects105|t
intersects106|f
intersects150|t
intersects151|t
intersects152|f
intersects153|t
intersects154|f
intersects155|t
intersects156|f
contains100|t
contains101|f
contains102|f
contains103|f
contains104|f
contains105|t
contains106|t
within119|f
within120|f
contains110|t
contains111|f
within130|t
within131|f
overlaps|f
isvalid|t
NOTICE:  Self-intersection
isvalid|f
isvalid|t
intersection|POINT(0 0)
difference|MULTILINESTRING((0 10,0 2),(0 -2,0 -10))
boundary|MULTILINESTRING((0 0,0 10,10 10,10 0,0 0),(2 2,2 4,4 4,4 2,2 2))
symdifference|GEOMETRYCOLLECTION(LINESTRING(2 2,4 4),LINESTRING(10 10,20 20),POLYGON((0 0,0 10,10 10,10 0,0 0),(4 4,2 4,2 2,4 2,4 4)))
issimple|t
equals|t
pointonsurface|POINT(5 5)
centroid|POINT(5.08333333333333 5.08333333333333)
exteriorring|LINESTRING(52 18,66 23,73 9,48 6,52 18)
polygonize_garray|GEOMETRYCOLLECTION EMPTY
polygonize_garray|POLYGON((10 0,0 0,0 10,10 10,10 0))
linemerge149|LINESTRING(-5 -5,0 0,1 1,4 4)
intersects|f
ST_GeometryN|LINESTRING(0 0,1 1)
ST_NumGeometries|1
ST_Union1|POLYGON((0 0,0 1,0.5 1,0.5 1.5,1.5 1.5,1.5 0.5,1 0.5,1 0,0 0))
ST_StartPoint1|POINT(0 0)
ST_EndPoint1|POINT(2 2)
ST_PointN1|POINT(1 1)
ST_PointN2|POINT(2 2)
ST_PointN3|
ST_PointN4|
ST_PointN5|POINT(0 0)
ST_PointN6|
ST_Buffer(empty)|POLYGON EMPTY