{
  "function": "crosses",
  "description": "Tests whether a geometry crosses another. Returns true if the supplied geometries have some, but not all, interior points in common.",
  "arguments": [ {"arg":"geometry a","description":"a geometry"},
                 {"arg":"geometry b","description":"a geometry"}],
  "examples": [  { "expression":"crosses( geom_from_wkt( 'LINESTRING(3 5, 4 4, 5 3)' ), geom_from_wkt( 'LINESTRING(3 3, 4 4, 5 5)' ) )", "returns":"true"},
  { "expression":"crosses( geom_from_wkt( 'POINT(4 5)' ), geom_from_wkt( 'LINESTRING(3 3, 4 4, 5 5)' ) )", "returns":"false"}
  ]
}