diff --git a/doc/texinfo/opt_mesh.texi b/doc/texinfo/opt_mesh.texi
index edb5f331d8a3f58e7594cfaff3b6c48e850d514a..c8672467bde4c1459ebb01097160c6cdd3536880 100644
--- a/doc/texinfo/opt_mesh.texi
+++ b/doc/texinfo/opt_mesh.texi
@@ -109,6 +109,11 @@ Enable lighting for the mesh@*
 Default value: @code{0}@*
 Saved in: @code{General.OptionsFileName}
 
+@item Mesh.LightTwoSide
+Light both sides of mesh elements (leads to slower rendering)@*
+Default value: @code{1}@*
+Saved in: @code{General.OptionsFileName}
+
 @item Mesh.Lines
 Display mesh lines (1D elements)?@*
 Default value: @code{0}@*
diff --git a/doc/texinfo/opt_view.texi b/doc/texinfo/opt_view.texi
index 799aaca05d7d74a7ca76c06840aa4fb1bb61a55a..36bb7d77f9f48ff203d91fc23599a8413f472349 100644
--- a/doc/texinfo/opt_view.texi
+++ b/doc/texinfo/opt_view.texi
@@ -169,6 +169,11 @@ Enable lighting for the view@*
 Default value: @code{1}@*
 Saved in: @code{General.OptionsFileName}
 
+@item View.LightTwoSide
+Light both sides of view elements (leads to slower rendering)@*
+Default value: @code{1}@*
+Saved in: @code{General.OptionsFileName}
+
 @item View.LineType
 Display lines as solid color segments (0) or 3D cylinders (1)@*
 Default value: @code{0}@*