1 files changed, 65 insertions, 1 deletions
diff --git a/docs/source/operations/projections/omerc.rst b/docs/source/operations/projections/omerc.rst
index 114b9fa3..bffcb589 100644
--- a/docs/source/operations/projections/omerc.rst
+++ b/docs/source/operations/projections/omerc.rst
@@ -6,5 +6,69 @@ Oblique Mercator
 
 .. image:: ./images/omerc.png
    :scale: 50%
-   :alt:   Oblique Mercator  
+   :alt:   Oblique Mercator
 
+Parameters
+################################################################################
+
+
+Central point and azimuth method
+--------------------------------------------------------------------------------
+
+.. option:: +alpha=<value>
+
+    Azimuth of centerline clockwise from north at the center point of the line.
+    If :option:`+gamma` is not given then :option:`+alpha` determines the value of
+    :option:`+gamma`.
+
+.. option:: +gamma=<value>
+
+    Azimuth of centerline clockwise from north of the rectified
+    bearing of centre line. If :option:`+alpha` is not given, then
+    :option:`+gamma` is used to determine :option:`+alpha`.
+
+.. option:: +lonc=<value>
+
+    Longitude of the central point.
+
+.. option:: +lat_0=<value>
+
+    Latitude of the central point.
+
+Two point method
+--------------------------------------------------------------------------------
+
+.. option:: +lon_1=<value>
+
+    Longitude of first point.
+
+.. option:: +lat_1=<value>
+
+    Latitude of first point.
+
+.. option:: +lon_2=<value>
+
+    Longitude of second point.
+
+.. option:: +lat_2=<value>
+
+    Latitude of second point.
+
+Optional
+--------------------------------------------------------------------------------
+
+.. option:: +no_rot
+
+    Do not rotate axis.
+
+.. option:: +no_off
+
+    Do not offset origin to center of projection.
+
+.. include:: ../options/k_0.rst
+
+.. include:: ../options/lon_0.rst
+
+.. include:: ../options/x_0.rst
+
+.. include:: ../options/y_0.rst