Add fifth value for BBOX to be conforming to the WFS 1.1 spec

14.3.3 Bounding box

The bounding box parameter, BBOX, is included in this specification for convenience as a shorthand representation of the very common a bounding box filter which would be expressed in much longer form using XML and the filter encoding described in [3]. A BBOX applies to all feature types listed in the request.

The KVP encoding for a bounding box is defined in subclause 10.2.3 of normative reference [15]. The general form of the parameter is:

BBOX=lcc1,lcc2,...,lccN,ucc1,ucc2,...uccN[,crsuri]

where lcc means Lower Corner Coordinate, ucc means Upper Corner Coordinate and crsuri means the URI reference to the coordinate system being used. This encoding allows N coordinates for each corner listed in the order of the optional crsuri. If the crsuri is not specified then the 2-D coordinates shall be specified using decimal degrees and WGS84 as described in [15].