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diff --git a/Marlin/src/gcode/lcd/M73.cpp b/Marlin/src/gcode/lcd/M73.cpp
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+++ b/Marlin/src/gcode/lcd/M73.cpp
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+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * 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 3 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(LCD_SET_PROGRESS_MANUALLY)
+
+#include "../gcode.h"
+#include "../../lcd/marlinui.h"
+#include "../../sd/cardreader.h"
+
+/**
+ * M73: Set percentage complete (for display on LCD)
+ *
+ * Example:
+ *   M73 P25 ; Set progress to 25%
+ */
+void GcodeSuite::M73() {
+  if (parser.seen('P'))
+    ui.set_progress((PROGRESS_SCALE) > 1
+      ? parser.value_float() * (PROGRESS_SCALE)
+      : parser.value_byte()
+    );
+  #if BOTH(LCD_SET_PROGRESS_MANUALLY, USE_M73_REMAINING_TIME)
+    if (parser.seen('R')) ui.set_remaining_time(60 * parser.value_ulong());
+  #endif
+}
+
+#endif // LCD_SET_PROGRESS_MANUALLY