// NewPosFilter create a position filter
NewPosFilter create a position filter
// NewPosFilter create a position filter
func NewPosFilter(position [][][]string) *posFilter {
	return &posFilter {
		position: position,
	}
}
func NewPosFilter ( position [ ] [ ] [ ] string ) * posFilter { return & posFilter { position : position , } }
NewPosFilter create a position filter
NewPosFilter create a position filter