diff --git a/DiffractionGratings/grating2D.geo b/DiffractionGratings/grating2D.geo
index 88cc14a14e7a463d42c0824e66890eff7f97b3f9..635eacee285c8f0b8665934af949c8bb6c88d10c 100644
--- a/DiffractionGratings/grating2D.geo
+++ b/DiffractionGratings/grating2D.geo
@@ -15,6 +15,7 @@
 // You should have received a copy of the GNU General Public License
 // along with This program. If not, see <https://www.gnu.org/licenses/>.
 
+/** Select the config. (See also grating2D.pro) **/
 // Include "grating2D_data_AnisotropicGrating.geo";
 // Include "grating2D_data_LamellarGrating.geo";
 // Include "grating2D_data_PhotonicCrystalSlab.geo";
diff --git a/DiffractionGratings/grating2D.pro b/DiffractionGratings/grating2D.pro
index af2c9c742caf84fd9034d13131259074cec10017..84d0a5fdb2021ed47436d2aa83edecf85de27467 100644
--- a/DiffractionGratings/grating2D.pro
+++ b/DiffractionGratings/grating2D.pro
@@ -16,7 +16,7 @@
 // along with This program. If not, see <https://www.gnu.org/licenses/>.
 
 
-/** Select the config. **/
+/** Select the config. (See also grating2D.geo) **/
 // Include "grating2D_data_AnisotropicGrating.geo";
 // Include "grating2D_data_LamellarGrating.geo";
 // Include "grating2D_data_PhotonicCrystalSlab.geo";