Standardize formatting of "null"
It was formatted three different ways in this one file.  Standardize
on ``null``.
@@ -87,7 +87,7 @@ Constructors
Returns a LineString formed from an array of points. If there are fewer
than two non-empty points in the input array, an empty LineString will be
- returned. Throws an exception if any element in the array is `null` or
+ returned. Throws an exception if any element in the array is ``null`` or
empty or same as the previous one. The returned geometry may not be
simple, e.g. may self-intersect or may contain duplicate vertexes depending
on the input.
@@ -95,8 +95,8 @@ Constructors
.. function:: ST_MultiPoint(array(Point)) -> MultiPoint
Returns a MultiPoint geometry object formed from the specified points.
- Return `null` if input array is empty. Throws an exception if any element
- in the array is `null` or empty. The returned geometry may not be simple
+ Return ``null`` if input array is empty. Throws an exception if any element
+ in the array is ``null`` or empty. The returned geometry may not be simple
and may contain duplicate points if input array has duplicates.
.. function:: ST_Point(x, y) -> Point
@@ -201,7 +201,7 @@ Operations
.. function:: ST_EnvelopeAsPts(Geometry) -> array(Geometry)
Returns an array of two points: the lower left and upper right corners of
- the bounding rectangular polygon of a geometry. Returns null if input
+ the bounding rectangular polygon of a geometry. Returns ``null`` if input
geometry is empty.
.. function:: ST_ExteriorRing(Geometry) -> Geometry
@@ -365,7 +365,7 @@ Accessors
.. function:: ST_InteriorRings(Geometry) -> Geometry
Returns an array of all interior rings found in the input geometry, or an empty
- array if the polygon has no interior rings. Returns null if the input geometry
+ array if the polygon has no interior rings. Returns ``null`` if the input geometry
is empty. Throws an error if the input geometry is not a polygon.
.. function:: ST_NumGeometries(Geometry) -> bigint
@@ -379,7 +379,7 @@ Accessors
.. function:: ST_Geometries(Geometry) -> Geometry
Returns an array of geometries in the specified collection. Returns a one-element array
- if the input geometry is not a multi-geometry. Returns null if input geometry is empty.
+ if the input geometry is not a multi-geometry. Returns ``null`` if input geometry is empty.
.. function:: ST_NumPoints(Geometry) -> bigint
