diff --git a/doc/reference_operator.xml b/doc/reference_operator.xml
index 91e7301f6..09a9efec6 100644
--- a/doc/reference_operator.xml
+++ b/doc/reference_operator.xml
@@ -534,7 +534,7 @@ FROM
=
- Returns TRUE if A's bounding box is the same as B's.
+ Returns TRUE if A's bounding box is the same as B's. Uses double precision bounding box.
@@ -596,6 +596,10 @@ FROM
&curve_support;
&P_support;
+ Changed: 2.0.0 , the bounding box of geometries was changed to use double precision instead of float4 precision of
+ prior. The side effect of this is that in particular points in prior versions that were a little different may have returned
+ true in prior versions and false in 2.0+ since their float4 boxes would be the same but there float8 (double precision), would be
+ different.
@@ -627,7 +631,15 @@ GROUP BY column1;
st_astext
---------------------
LINESTRING(0 0,1 1)
-(1 row)
+(1 row)
+
+-- In versions prior to 2.0, this used to return true --
+ SELECT ST_GeomFromText('POINT(1707296.37 4820536.77)') =
+ ST_GeomFromText('POINT(1707296.27 4820536.87)') As pt_intersect;
+
+--pt_intersect --
+f
+