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-rw-r--r--docs/source/usage/differences.rst13
-rw-r--r--docs/source/usage/transformation.rst1
2 files changed, 14 insertions, 0 deletions
diff --git a/docs/source/usage/differences.rst b/docs/source/usage/differences.rst
index 149224fd..7d9d6ced 100644
--- a/docs/source/usage/differences.rst
+++ b/docs/source/usage/differences.rst
@@ -13,6 +13,19 @@ that uses PROJ.
Behavioural changes caused by new bugs are not tracked here, as they should be
fixed in later versions of PROJ.
+Version 4.6.0
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+The default datum application behavior changed with the 4.6.0 release. PROJ
+will now only apply a datum shift if both the source and destination coordinate
+system have valid datum shift information.
+
+The PROJ 4.6.0 Release Notes states
+
+ MAJOR: Rework :c:func:`pj_transform()` to avoid applying ellipsoid to ellipsoid
+ transformations as a datum shift when no datum info is available.
+
+
Version 5.0.0
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
diff --git a/docs/source/usage/transformation.rst b/docs/source/usage/transformation.rst
index 8b3e8c6a..bc5c3b1b 100644
--- a/docs/source/usage/transformation.rst
+++ b/docs/source/usage/transformation.rst
@@ -135,6 +135,7 @@ coordinate timestamps back to GPS weeks.
cs2cs paradigm
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+.. _cs2cs_specific_options:
============ ==============================================================
Parameter Description