diff --git a/display/display.h b/display/display.h
index 4eafe3f..0cb4314 100644
--- a/display/display.h
+++ b/display/display.h
@@ -3,14 +3,20 @@ Copyright 2022, Savanni D'Gerinel <savanni@luminescent-dreams.com>
 
 This file is part of Savanni's AVR library.
 
-Lumeto 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 3 of the License, or (at your option) any later version.
+This AVR library 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 3 of the License, or (at your option) any
+later version.
 
-Lumeto 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.
+Lumeto 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 Lumeto. If not, see <https://www.gnu.org/licenses/>.
+You should have received a copy of the GNU General Public License along with
+Lumeto. If not, see <https://www.gnu.org/licenses/>.
 */
 
-/* This library covers a five-wire diagnostic display board.
+/* This library covers a three-wire diagnostic display board.
  *
  * Hardware:
  * 74HC595 shift register
@@ -22,21 +28,17 @@ You should have received a copy of the GNU General Public License along with Lum
  *    edge. This leads to the 74HC595, pin 11 (Shift Clock).
  *  LS -- Latch pulse. All data in the shift register will be sent to the
  *    output on a rising edge. This leads to the 74HC595, pin 12 (Latch Clock);
- *  RS -- Register select. 0 to write an instruction to the display, 1 to write
- *    data to the display.
- *  E -- Enable. This tells the display to read the data. The display will get
- *    the data on the shift register outputs, so be sure to send LS before
- *    sending E.
  *
  * 74HC595 -> HD44780
- *  Qa -> D0
- *  Qb -> D1
- *  Qc -> D2
- *  Qd -> D3
- *  Qe -> D4
- *  Qf -> D5
- *  Qg -> D6
- *  Qh -> D7
+ *  Qc -> D4
+ *  Qd -> D5
+ *  Qe -> D6
+ *  Qf -> D7
+ *  Qg -> RS
+ *  Qh -> E
+ *
+ * I use the 4-wire protocol of the HD44780. This means that two of the shift
+ * register pins are used for the RS and E control pins of the LCD.
  */
 
 #ifndef __DISPLAY_H__