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diff --git a/keyboards/handwired/hnah40/hnah40.h b/keyboards/handwired/hnah40/hnah40.h
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+++ b/keyboards/handwired/hnah40/hnah40.h
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+/* Copyright 2019 HnahKB
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include "quantum.h"
+
+// This a shortcut to help you visually see your layout.
+// The following is an example using the Planck MIT layout
+// The first section contains all of the arguments representing the physical
+// layout of the board and position of the keys
+// The second converts the arguments into a two-dimensional array which 
+// represents the switch matrix. 
+
+#define LAYOUT( \
+    k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A, k39, \
+    k10,  k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A,  \
+    k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A,  \
+    k30, k31, k32, k33, k35, k37, k38, k3A\
+) \
+{ \
+    { k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A }, \
+    { k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A }, \
+    { k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A }, \
+    { k30, k31, k32, k33, KC_NO, k35, KC_NO, k37, k38, k39, k3A }, \
+}