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-rw-r--r--docs/source/operations/projections/chamb.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/docs/source/operations/projections/chamb.rst b/docs/source/operations/projections/chamb.rst
index c0c8f063..c33017a5 100644
--- a/docs/source/operations/projections/chamb.rst
+++ b/docs/source/operations/projections/chamb.rst
@@ -34,6 +34,8 @@ Parameters
Required
--------------------------------------------------------------------------------
+.. note:: Control points should be oriented clockwise.
+
.. option:: +lat_1=<value>
Latitude of the first control point.