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-rw-r--r--docs/source/operations/transformations/hgridshift.rst5
1 files changed, 3 insertions, 2 deletions
diff --git a/docs/source/operations/transformations/hgridshift.rst b/docs/source/operations/transformations/hgridshift.rst
index 1d864a9e..b1125f07 100644
--- a/docs/source/operations/transformations/hgridshift.rst
+++ b/docs/source/operations/transformations/hgridshift.rst
@@ -38,8 +38,9 @@ grids in the start of the list takes precedence over the grids in the back of th
list.
PROJ supports CTable2, NTv1 and NTv2 files for horizontal grid corrections. Details
-about all three formats can be found in the GDAL documentation. GDAL reads and
-writes all three formats. Using GDAL for construction of new grids is recommended.
+about all three formats can be found in the GDAL documentation and/or driver source
+code. GDAL reads and writes all three formats. Using GDAL for construction of
+new grids is recommended.
Temporal gridshifting