Use a STR_ prefix for non-translated strings

Marlin/src/HAL/HAL_AVR/persistent_store_eeprom.cpp

     if (v != eeprom_read_byte(p)) {
       eeprom_write_byte(p, v);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }

Marlin/src/HAL/HAL_AVR/watchdog.cpp

 #if ENABLED(WATCHDOG_RESET_MANUAL)
   ISR(WDT_vect) {
     sei();  // With the interrupt driven serial we need to allow interrupts.
-    SERIAL_ERROR_MSG(MSG_WATCHDOG_FIRED);
+    SERIAL_ERROR_MSG(STR_WATCHDOG_FIRED);
     minkill();  // interrupt-safe final kill and infinite loop
   }
 #endif

Marlin/src/HAL/HAL_DUE/persistent_store_eeprom.cpp

       eeprom_write_byte(p, v);
       delay(2);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }

Marlin/src/HAL/HAL_SAMD51/persistent_store_eeprom.cpp

         eeprom_write_byte(p, v);
         delay(2);
         if (eeprom_read_byte(p) != v) {
-          SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+          SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
           return true;
         }
       }

Marlin/src/HAL/HAL_STM32/persistent_store_impl.cpp

       if (v != eeprom_read_byte(p)) {
         eeprom_write_byte(p, v);
         if (eeprom_read_byte(p) != v) {
-          SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+          SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
           return true;
         }
       }

Marlin/src/HAL/HAL_STM32F1/persistent_store_eeprom.cpp

     if (v != eeprom_read_byte(p)) {
       eeprom_write_byte(p, v);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }

Marlin/src/HAL/HAL_STM32_F4_F7/persistent_store_eeprom.cpp

     if (v != eeprom_read_byte(p)) {
       eeprom_write_byte(p, v);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }

Marlin/src/HAL/HAL_TEENSY31_32/persistent_store_impl.cpp

     if (v != eeprom_read_byte(p)) {
       eeprom_write_byte(p, v);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }

Marlin/src/HAL/HAL_TEENSY35_36/persistent_store_eeprom.cpp

     if (v != eeprom_read_byte(p)) {
       eeprom_write_byte(p, v);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }

Marlin/src/MarlinCore.cpp

 }
 
 void protected_pin_err() {
-  SERIAL_ERROR_MSG(MSG_ERR_PROTECTED_PIN);
+  SERIAL_ERROR_MSG(STR_ERR_PROTECTED_PIN);
 }
 
 void quickstop_stepper() {
           ui.reselect_last_file();
         #endif
 
-        SERIAL_ECHOLNPGM(MSG_FILE_PRINTED);
+        SERIAL_ECHOLNPGM(STR_FILE_PRINTED);
 
       default:
         did_state = false;
 
   if (max_inactive_time && ELAPSED(ms, gcode.previous_move_ms + max_inactive_time)) {
     SERIAL_ERROR_START();
-    SERIAL_ECHOLNPAIR(MSG_KILL_INACTIVE_TIME, parser.command_ptr);
+    SERIAL_ECHOLNPAIR(STR_KILL_INACTIVE_TIME, parser.command_ptr);
     kill();
   }
 
     // KILL the machine
     // ----------------------------------------------------------------
     if (killCount >= KILL_DELAY) {
-      SERIAL_ERROR_MSG(MSG_KILL_BUTTON);
+      SERIAL_ERROR_MSG(STR_KILL_BUTTON);
       kill();
     }
   #endif
 void kill(PGM_P const lcd_error/*=nullptr*/, PGM_P const lcd_component/*=nullptr*/, const bool steppers_off/*=false*/) {
   thermalManager.disable_all_heaters();
 
-  SERIAL_ERROR_MSG(MSG_ERR_KILLED);
+  SERIAL_ERROR_MSG(STR_ERR_KILLED);
 
   #if HAS_DISPLAY
     ui.kill_screen(lcd_error ?: GET_TEXT(MSG_KILLED), lcd_component ?: NUL_STR);
   #endif
 
   if (IsRunning()) {
-    SERIAL_ERROR_MSG(MSG_ERR_STOPPED);
+    SERIAL_ERROR_MSG(STR_ERR_STOPPED);
     LCD_MESSAGEPGM(MSG_STOPPED);
     safe_delay(350);       // allow enough time for messages to get out before stopping
     Running = false;
 
   // Check startup - does nothing if bootloader sets MCUSR to 0
   byte mcu = HAL_get_reset_source();
-  if (mcu &  1) SERIAL_ECHOLNPGM(MSG_POWERUP);
-  if (mcu &  2) SERIAL_ECHOLNPGM(MSG_EXTERNAL_RESET);
-  if (mcu &  4) SERIAL_ECHOLNPGM(MSG_BROWNOUT_RESET);
-  if (mcu &  8) SERIAL_ECHOLNPGM(MSG_WATCHDOG_RESET);
-  if (mcu & 32) SERIAL_ECHOLNPGM(MSG_SOFTWARE_RESET);
+  if (mcu &  1) SERIAL_ECHOLNPGM(STR_POWERUP);
+  if (mcu &  2) SERIAL_ECHOLNPGM(STR_EXTERNAL_RESET);
+  if (mcu &  4) SERIAL_ECHOLNPGM(STR_BROWNOUT_RESET);
+  if (mcu &  8) SERIAL_ECHOLNPGM(STR_WATCHDOG_RESET);
+  if (mcu & 32) SERIAL_ECHOLNPGM(STR_SOFTWARE_RESET);
   HAL_clear_reset_source();
 
   serialprintPGM(GET_TEXT(MSG_MARLIN));
 
   #if defined(STRING_DISTRIBUTION_DATE) && defined(STRING_CONFIG_H_AUTHOR)
     SERIAL_ECHO_MSG(
-      MSG_CONFIGURATION_VER
+      STR_CONFIGURATION_VER
       STRING_DISTRIBUTION_DATE
-      MSG_AUTHOR STRING_CONFIG_H_AUTHOR
+      STR_AUTHOR STRING_CONFIG_H_AUTHOR
     );
     SERIAL_ECHO_MSG("Compiled: " __DATE__);
   #endif
 
   SERIAL_ECHO_START();
-  SERIAL_ECHOLNPAIR(MSG_FREE_MEMORY, freeMemory(), MSG_PLANNER_BUFFER_BYTES, (int)sizeof(block_t) * (BLOCK_BUFFER_SIZE));
+  SERIAL_ECHOLNPAIR(STR_FREE_MEMORY, freeMemory(), STR_PLANNER_BUFFER_BYTES, (int)sizeof(block_t) * (BLOCK_BUFFER_SIZE));
 
   // UI must be initialized before EEPROM
   // (because EEPROM code calls the UI).

Marlin/src/core/language.h

 //  #define STRING_SPLASH_LINE3 WEBSITE_URL
 //#endif
 
+//
+// Common Serial Console Messages
+// Don't change these strings because serial hosts look for them.
+//
+
+#define STR_ENQUEUEING                      "enqueueing \""
+#define STR_POWERUP                         "PowerUp"
+#define STR_EXTERNAL_RESET                  " External Reset"
+#define STR_BROWNOUT_RESET                  " Brown out Reset"
+#define STR_WATCHDOG_RESET                  " Watchdog Reset"
+#define STR_SOFTWARE_RESET                  " Software Reset"
+#define STR_AUTHOR                          " | Author: "
+#define STR_CONFIGURATION_VER               " Last Updated: "
+#define STR_FREE_MEMORY                     " Free Memory: "
+#define STR_PLANNER_BUFFER_BYTES            "  PlannerBufferBytes: "
+#define STR_OK                              "ok"
+#define STR_WAIT                            "wait"
+#define STR_STATS                           "Stats: "
+#define STR_FILE_SAVED                      "Done saving file."
+#define STR_ERR_LINE_NO                     "Line Number is not Last Line Number+1, Last Line: "
+#define STR_ERR_CHECKSUM_MISMATCH           "checksum mismatch, Last Line: "
+#define STR_ERR_NO_CHECKSUM                 "No Checksum with line number, Last Line: "
+#define STR_FILE_PRINTED                    "Done printing file"
+#define STR_BEGIN_FILE_LIST                 "Begin file list"
+#define STR_END_FILE_LIST                   "End file list"
+#define STR_INVALID_EXTRUDER                "Invalid extruder"
+#define STR_INVALID_E_STEPPER               "Invalid E stepper"
+#define STR_E_STEPPER_NOT_SPECIFIED         "E stepper not specified"
+#define STR_INVALID_SOLENOID                "Invalid solenoid"
+#define STR_M115_REPORT                     "FIRMWARE_NAME:Marlin " DETAILED_BUILD_VERSION " SOURCE_CODE_URL:" SOURCE_CODE_URL " PROTOCOL_VERSION:" PROTOCOL_VERSION " MACHINE_TYPE:" MACHINE_NAME " EXTRUDER_COUNT:" STRINGIFY(EXTRUDERS) " UUID:" MACHINE_UUID
+#define STR_COUNT_X                         " Count X:"
+#define STR_COUNT_A                         " Count A:"
+#define STR_WATCHDOG_FIRED                  "Watchdog timeout. Reset required."
+#define STR_ERR_KILLED                      "Printer halted. kill() called!"
+#define STR_ERR_STOPPED                     "Printer stopped due to errors. Fix the error and use M999 to restart. (Temperature is reset. Set it after restarting)"
+#define STR_BUSY_PROCESSING                 "busy: processing"
+#define STR_BUSY_PAUSED_FOR_USER            "busy: paused for user"
+#define STR_BUSY_PAUSED_FOR_INPUT           "busy: paused for input"
+#define STR_Z_MOVE_COMP                     "Z_move_comp"
+#define STR_RESEND                          "Resend: "
+#define STR_UNKNOWN_COMMAND                 "Unknown command: \""
+#define STR_ACTIVE_EXTRUDER                 "Active Extruder: "
+#define STR_X_MIN                           "x_min"
+#define STR_X_MAX                           "x_max"
+#define STR_X2_MIN                          "x2_min"
+#define STR_X2_MAX                          "x2_max"
+#define STR_Y_MIN                           "y_min"
+#define STR_Y_MAX                           "y_max"
+#define STR_Y2_MIN                          "y2_min"
+#define STR_Y2_MAX                          "y2_max"
+#define STR_Z_MIN                           "z_min"
+#define STR_Z_MAX                           "z_max"
+#define STR_Z2_MIN                          "z2_min"
+#define STR_Z2_MAX                          "z2_max"
+#define STR_Z3_MIN                          "z3_min"
+#define STR_Z3_MAX                          "z3_max"
+#define STR_Z4_MIN                          "z4_min"
+#define STR_Z4_MAX                          "z4_max"
+#define STR_Z_PROBE                         "z_probe"
+#define STR_FILAMENT_RUNOUT_SENSOR          "filament"
+#define STR_PROBE_OFFSET                    "Probe Offset"
+#define STR_SKEW_MIN                        "min_skew_factor: "
+#define STR_SKEW_MAX                        "max_skew_factor: "
+#define STR_ERR_MATERIAL_INDEX              "M145 S<index> out of range (0-1)"
+#define STR_ERR_M421_PARAMETERS             "M421 incorrect parameter usage"
+#define STR_ERR_BAD_PLANE_MODE              "G5 requires XY plane mode"
+#define STR_ERR_MESH_XY                     "Mesh point cannot be resolved"
+#define STR_ERR_ARC_ARGS                    "G2/G3 bad parameters"
+#define STR_ERR_PROTECTED_PIN               "Protected Pin"
+#define STR_ERR_M420_FAILED                 "Failed to enable Bed Leveling"
+#define STR_ERR_M428_TOO_FAR                "Too far from reference point"
+#define STR_ERR_M303_DISABLED               "PIDTEMP disabled"
+#define STR_M119_REPORT                     "Reporting endstop status"
+#define STR_ON                              "ON"
+#define STR_OFF                             "OFF"
+#define STR_ENDSTOP_HIT                     "TRIGGERED"
+#define STR_ENDSTOP_OPEN                    "open"
+#define STR_HOTEND_OFFSET                   "Hotend offsets:"
+#define STR_DUPLICATION_MODE                "Duplication mode: "
+#define STR_SOFT_ENDSTOPS                   "Soft endstops: "
+#define STR_SOFT_MIN                        "  Min: "
+#define STR_SOFT_MAX                        "  Max: "
+
+#define STR_SAVED_POS                       "Position saved"
+#define STR_RESTORING_POS                   "Restoring position"
+#define STR_INVALID_POS_SLOT                "Invalid slot. Total: "
+
+#define STR_SD_CANT_OPEN_SUBDIR             "Cannot open subdir "
+#define STR_SD_INIT_FAIL                    "SD init fail"
+#define STR_SD_VOL_INIT_FAIL                "volume.init failed"
+#define STR_SD_OPENROOT_FAIL                "openRoot failed"
+#define STR_SD_CARD_OK                      "SD card ok"
+#define STR_SD_WORKDIR_FAIL                 "workDir open failed"
+#define STR_SD_OPEN_FILE_FAIL               "open failed, File: "
+#define STR_SD_FILE_OPENED                  "File opened: "
+#define STR_SD_SIZE                         " Size: "
+#define STR_SD_FILE_SELECTED                "File selected"
+#define STR_SD_WRITE_TO_FILE                "Writing to file: "
+#define STR_SD_PRINTING_BYTE                "SD printing byte "
+#define STR_SD_NOT_PRINTING                 "Not SD printing"
+#define STR_SD_ERR_WRITE_TO_FILE            "error writing to file"
+#define STR_SD_ERR_READ                     "SD read error"
+#define STR_SD_CANT_ENTER_SUBDIR            "Cannot enter subdir: "
+
+#define STR_ENDSTOPS_HIT                    "endstops hit: "
+#define STR_ERR_COLD_EXTRUDE_STOP           " cold extrusion prevented"
+#define STR_ERR_LONG_EXTRUDE_STOP           " too long extrusion prevented"
+#define STR_ERR_HOTEND_TOO_COLD             "Hotend too cold"
+#define STR_ERR_Z_HOMING_SER                "Home XY first"
+#define STR_ERR_EEPROM_WRITE                "Error writing to EEPROM!"
+
+#define STR_FILAMENT_CHANGE_HEAT_LCD        "Press button to heat nozzle"
+#define STR_FILAMENT_CHANGE_INSERT_LCD      "Insert filament and press button"
+#define STR_FILAMENT_CHANGE_WAIT_LCD        "Press button to resume"
+#define STR_FILAMENT_CHANGE_HEAT_M108       "Send M108 to heat nozzle"
+#define STR_FILAMENT_CHANGE_INSERT_M108     "Insert filament and send M108"
+#define STR_FILAMENT_CHANGE_WAIT_M108       "Send M108 to resume"
+
+#define STR_STOP_BLTOUCH                    "!! STOP called because of BLTouch error - restart with M999"
+#define STR_STOP_UNHOMED                    "!! STOP called because of unhomed error - restart with M999"
+#define STR_KILL_INACTIVE_TIME              "!! KILL caused by too much inactive time - current command: "
+#define STR_KILL_BUTTON                     "!! KILL caused by KILL button/pin"
+
+// temperature.cpp strings
+#define STR_PID_AUTOTUNE_PREFIX             "PID Autotune"
+#define STR_PID_AUTOTUNE_START              STR_PID_AUTOTUNE_PREFIX " start"
+#define STR_PID_AUTOTUNE_FAILED             STR_PID_AUTOTUNE_PREFIX " failed!"
+#define STR_PID_BAD_EXTRUDER_NUM            STR_PID_AUTOTUNE_FAILED " Bad extruder number"
+#define STR_PID_TEMP_TOO_HIGH               STR_PID_AUTOTUNE_FAILED " Temperature too high"
+#define STR_PID_TIMEOUT                     STR_PID_AUTOTUNE_FAILED " timeout"
+#define STR_BIAS                            " bias: "
+#define STR_D_COLON                         " d: "
+#define STR_T_MIN                           " min: "
+#define STR_T_MAX                           " max: "
+#define STR_KU                              " Ku: "
+#define STR_TU                              " Tu: "
+#define STR_CLASSIC_PID                     " Classic PID "
+#define STR_KP                              " Kp: "
+#define STR_KI                              " Ki: "
+#define STR_KD                              " Kd: "
+#define STR_PID_AUTOTUNE_FINISHED           STR_PID_AUTOTUNE_PREFIX " finished! Put the last Kp, Ki and Kd constants from below into Configuration.h"
+#define STR_PID_DEBUG                       " PID_DEBUG "
+#define STR_PID_DEBUG_INPUT                 ": Input "
+#define STR_PID_DEBUG_OUTPUT                " Output "
+#define STR_PID_DEBUG_PTERM                 " pTerm "
+#define STR_PID_DEBUG_ITERM                 " iTerm "
+#define STR_PID_DEBUG_DTERM                 " dTerm "
+#define STR_PID_DEBUG_CTERM                 " cTerm "
+#define STR_INVALID_EXTRUDER_NUM            " - Invalid extruder number !"
+
+#define STR_HEATER_BED                      "bed"
+#define STR_HEATER_CHAMBER                  "chamber"
+
+#define STR_STOPPED_HEATER                  ", system stopped! Heater_ID: "
+#define STR_REDUNDANCY                      "Heater switched off. Temperature difference between temp sensors is too high !"
+#define STR_T_HEATING_FAILED                "Heating failed"
+#define STR_T_THERMAL_RUNAWAY               "Thermal Runaway"
+#define STR_T_MAXTEMP                       "MAXTEMP triggered"
+#define STR_T_MINTEMP                       "MINTEMP triggered"
+#define STR_ERR_PROBING_FAILED              "Probing Failed"
+#define STR_ZPROBE_OUT_SER                  "Z Probe Past Bed"
+
+// Debug
+#define STR_DEBUG_PREFIX                    "DEBUG:"
+#define STR_DEBUG_OFF                       "off"
+#define STR_DEBUG_ECHO                      "ECHO"
+#define STR_DEBUG_INFO                      "INFO"
+#define STR_DEBUG_ERRORS                    "ERRORS"
+#define STR_DEBUG_DRYRUN                    "DRYRUN"
+#define STR_DEBUG_COMMUNICATION             "COMMUNICATION"
+#define STR_DEBUG_LEVELING                  "LEVELING"
+
+// LCD Menu Messages
+
+#define LANGUAGE_DATA_INCL_(M) STRINGIFY_(fontdata/langdata_##M.h)
+#define LANGUAGE_DATA_INCL(M) LANGUAGE_DATA_INCL_(M)
+
+#define LANGUAGE_INCL_(M) STRINGIFY_(../lcd/language/language_##M.h)
+#define LANGUAGE_INCL(M) LANGUAGE_INCL_(M)
+
+#define STR_X "X"
+#define STR_Y "Y"
+#define STR_Z "Z"
+#define STR_E "E"
+#if IS_KINEMATIC
+  #define STR_A "A"
+  #define STR_B "B"
+  #define STR_C "C"
+#else
+  #define STR_A "X"
+  #define STR_B "Y"
+  #define STR_C "Z"
+#endif
+#define STR_X2 "X2"
+#define STR_Y2 "Y2"
+#define STR_Z2 "Z2"
+#define STR_Z3 "Z3"
+#define STR_Z4 "Z4"
+
+#define LCD_STR_A STR_A
+#define LCD_STR_B STR_B
+#define LCD_STR_C STR_C
+#define LCD_STR_E STR_E
+
 #if HAS_CHARACTER_LCD
 
   // Custom characters defined in the first 8 characters of the LCD
 
 #endif
 
-// Common Serial Console Messages (do not translate those!)
-
-#define MSG_ENQUEUEING                      "enqueueing \""
-#define MSG_POWERUP                         "PowerUp"
-#define MSG_EXTERNAL_RESET                  " External Reset"
-#define MSG_BROWNOUT_RESET                  " Brown out Reset"
-#define MSG_WATCHDOG_RESET                  " Watchdog Reset"
-#define MSG_SOFTWARE_RESET                  " Software Reset"
-#define MSG_AUTHOR                          " | Author: "
-#define MSG_CONFIGURATION_VER               " Last Updated: "
-#define MSG_FREE_MEMORY                     " Free Memory: "
-#define MSG_PLANNER_BUFFER_BYTES            "  PlannerBufferBytes: "
-#define MSG_OK                              "ok"
-#define MSG_WAIT                            "wait"
-#define MSG_STATS                           "Stats: "
-#define MSG_FILE_SAVED                      "Done saving file."
-#define MSG_ERR_LINE_NO                     "Line Number is not Last Line Number+1, Last Line: "
-#define MSG_ERR_CHECKSUM_MISMATCH           "checksum mismatch, Last Line: "
-#define MSG_ERR_NO_CHECKSUM                 "No Checksum with line number, Last Line: "
-#define MSG_FILE_PRINTED                    "Done printing file"
-#define MSG_BEGIN_FILE_LIST                 "Begin file list"
-#define MSG_END_FILE_LIST                   "End file list"
-#define MSG_INVALID_EXTRUDER                "Invalid extruder"
-#define MSG_INVALID_E_STEPPER               "Invalid E stepper"
-#define MSG_E_STEPPER_NOT_SPECIFIED         "E stepper not specified"
-#define MSG_INVALID_SOLENOID                "Invalid solenoid"
-#define MSG_M115_REPORT                     "FIRMWARE_NAME:Marlin " DETAILED_BUILD_VERSION " SOURCE_CODE_URL:" SOURCE_CODE_URL " PROTOCOL_VERSION:" PROTOCOL_VERSION " MACHINE_TYPE:" MACHINE_NAME " EXTRUDER_COUNT:" STRINGIFY(EXTRUDERS) " UUID:" MACHINE_UUID
-#define MSG_COUNT_X                         " Count X:"
-#define MSG_COUNT_A                         " Count A:"
-#define MSG_WATCHDOG_FIRED                  "Watchdog timeout. Reset required."
-#define MSG_ERR_KILLED                      "Printer halted. kill() called!"
-#define MSG_ERR_STOPPED                     "Printer stopped due to errors. Fix the error and use M999 to restart. (Temperature is reset. Set it after restarting)"
-#define MSG_BUSY_PROCESSING                 "busy: processing"
-#define MSG_BUSY_PAUSED_FOR_USER            "busy: paused for user"
-#define MSG_BUSY_PAUSED_FOR_INPUT           "busy: paused for input"
-#define MSG_Z_MOVE_COMP                     "Z_move_comp"
-#define MSG_RESEND                          "Resend: "
-#define MSG_UNKNOWN_COMMAND                 "Unknown command: \""
-#define MSG_ACTIVE_EXTRUDER                 "Active Extruder: "
-#define MSG_X_MIN                           "x_min"
-#define MSG_X_MAX                           "x_max"
-#define MSG_X2_MIN                          "x2_min"
-#define MSG_X2_MAX                          "x2_max"
-#define MSG_Y_MIN                           "y_min"
-#define MSG_Y_MAX                           "y_max"
-#define MSG_Y2_MIN                          "y2_min"
-#define MSG_Y2_MAX                          "y2_max"
-#define MSG_Z_MIN                           "z_min"
-#define MSG_Z_MAX                           "z_max"
-#define MSG_Z2_MIN                          "z2_min"
-#define MSG_Z2_MAX                          "z2_max"
-#define MSG_Z3_MIN                          "z3_min"
-#define MSG_Z3_MAX                          "z3_max"
-#define MSG_Z4_MIN                          "z4_min"
-#define MSG_Z4_MAX                          "z4_max"
-#define MSG_Z_PROBE                         "z_probe"
-#define MSG_FILAMENT_RUNOUT_SENSOR          "filament"
-#define MSG_PROBE_OFFSET                    "Probe Offset"
-#define MSG_SKEW_MIN                        "min_skew_factor: "
-#define MSG_SKEW_MAX                        "max_skew_factor: "
-#define MSG_ERR_MATERIAL_INDEX              "M145 S<index> out of range (0-1)"
-#define MSG_ERR_M421_PARAMETERS             "M421 incorrect parameter usage"
-#define MSG_ERR_BAD_PLANE_MODE              "G5 requires XY plane mode"
-#define MSG_ERR_MESH_XY                     "Mesh point cannot be resolved"
-#define MSG_ERR_ARC_ARGS                    "G2/G3 bad parameters"
-#define MSG_ERR_PROTECTED_PIN               "Protected Pin"
-#define MSG_ERR_M420_FAILED                 "Failed to enable Bed Leveling"
-#define MSG_ERR_M428_TOO_FAR                "Too far from reference point"
-#define MSG_ERR_M303_DISABLED               "PIDTEMP disabled"
-#define MSG_M119_REPORT                     "Reporting endstop status"
-#define MSG_ON                              "ON"
-#define MSG_OFF                             "OFF"
-#define MSG_ENDSTOP_HIT                     "TRIGGERED"
-#define MSG_ENDSTOP_OPEN                    "open"
-#define MSG_HOTEND_OFFSET                   "Hotend offsets:"
-#define MSG_DUPLICATION_MODE                "Duplication mode: "
-#define MSG_SOFT_ENDSTOPS                   "Soft endstops: "
-#define MSG_SOFT_MIN                        "  Min: "
-#define MSG_SOFT_MAX                        "  Max: "
-
-#define MSG_SAVED_POS                       "Position saved"
-#define MSG_RESTORING_POS                   "Restoring position"
-#define MSG_INVALID_POS_SLOT                "Invalid slot. Total: "
-
-#define MSG_SD_CANT_OPEN_SUBDIR             "Cannot open subdir "
-#define MSG_SD_INIT_FAIL                    "SD init fail"
-#define MSG_SD_VOL_INIT_FAIL                "volume.init failed"
-#define MSG_SD_OPENROOT_FAIL                "openRoot failed"
-#define MSG_SD_CARD_OK                      "SD card ok"
-#define MSG_SD_WORKDIR_FAIL                 "workDir open failed"
-#define MSG_SD_OPEN_FILE_FAIL               "open failed, File: "
-#define MSG_SD_FILE_OPENED                  "File opened: "
-#define MSG_SD_SIZE                         " Size: "
-#define MSG_SD_FILE_SELECTED                "File selected"
-#define MSG_SD_WRITE_TO_FILE                "Writing to file: "
-#define MSG_SD_PRINTING_BYTE                "SD printing byte "
-#define MSG_SD_NOT_PRINTING                 "Not SD printing"
-#define MSG_SD_ERR_WRITE_TO_FILE            "error writing to file"
-#define MSG_SD_ERR_READ                     "SD read error"
-#define MSG_SD_CANT_ENTER_SUBDIR            "Cannot enter subdir: "
-
-#define MSG_STEPPER_TOO_HIGH                "Steprate too high: "
-#define MSG_ENDSTOPS_HIT                    "endstops hit: "
-#define MSG_ERR_COLD_EXTRUDE_STOP           " cold extrusion prevented"
-#define MSG_ERR_LONG_EXTRUDE_STOP           " too long extrusion prevented"
-#define MSG_ERR_HOTEND_TOO_COLD             "Hotend too cold"
-#define MSG_ERR_Z_HOMING_SER                "Home XY first"
-#define MSG_ERR_EEPROM_WRITE                "Error writing to EEPROM!"
-
-#define MSG_FILAMENT_CHANGE_HEAT_LCD        "Press button to heat nozzle"
-#define MSG_FILAMENT_CHANGE_INSERT_LCD      "Insert filament and press button"
-#define MSG_FILAMENT_CHANGE_WAIT_LCD        "Press button to resume"
-#define MSG_FILAMENT_CHANGE_HEAT_M108       "Send M108 to heat nozzle"
-#define MSG_FILAMENT_CHANGE_INSERT_M108     "Insert filament and send M108"
-#define MSG_FILAMENT_CHANGE_WAIT_M108       "Send M108 to resume"
-
-#define MSG_STOP_BLTOUCH                    "!! STOP called because of BLTouch error - restart with M999"
-#define MSG_STOP_UNHOMED                    "!! STOP called because of unhomed error - restart with M999"
-#define MSG_KILL_INACTIVE_TIME              "!! KILL caused by too much inactive time - current command: "
-#define MSG_KILL_BUTTON                     "!! KILL caused by KILL button/pin"
-
-// temperature.cpp strings
-#define MSG_PID_AUTOTUNE_PREFIX             "PID Autotune"
-#define MSG_PID_AUTOTUNE_START              MSG_PID_AUTOTUNE_PREFIX " start"
-#define MSG_PID_AUTOTUNE_FAILED             MSG_PID_AUTOTUNE_PREFIX " failed!"
-#define MSG_PID_BAD_EXTRUDER_NUM            MSG_PID_AUTOTUNE_FAILED " Bad extruder number"
-#define MSG_PID_TEMP_TOO_HIGH               MSG_PID_AUTOTUNE_FAILED " Temperature too high"
-#define MSG_PID_TIMEOUT                     MSG_PID_AUTOTUNE_FAILED " timeout"
-#define MSG_BIAS                            " bias: "
-#define MSG_D                               " d: "
-#define MSG_T_MIN                           " min: "
-#define MSG_T_MAX                           " max: "
-#define MSG_KU                              " Ku: "
-#define MSG_TU                              " Tu: "
-#define MSG_CLASSIC_PID                     " Classic PID "
-#define MSG_KP                              " Kp: "
-#define MSG_KI                              " Ki: "
-#define MSG_KD                              " Kd: "
-#define MSG_AT                              " @:"
-#define MSG_PID_AUTOTUNE_FINISHED           MSG_PID_AUTOTUNE_PREFIX " finished! Put the last Kp, Ki and Kd constants from below into Configuration.h"
-#define MSG_PID_DEBUG                       " PID_DEBUG "
-#define MSG_PID_DEBUG_INPUT                 ": Input "
-#define MSG_PID_DEBUG_OUTPUT                " Output "
-#define MSG_PID_DEBUG_PTERM                 " pTerm "
-#define MSG_PID_DEBUG_ITERM                 " iTerm "
-#define MSG_PID_DEBUG_DTERM                 " dTerm "
-#define MSG_PID_DEBUG_CTERM                 " cTerm "
-#define MSG_INVALID_EXTRUDER_NUM            " - Invalid extruder number !"
-
-#define MSG_HEATER_BED                      "bed"
-#define MSG_HEATER_CHAMBER                  "chamber"
-
-#define MSG_STOPPED_HEATER                  ", system stopped! Heater_ID: "
-#define MSG_REDUNDANCY                      "Heater switched off. Temperature difference between temp sensors is too high !"
-#define MSG_T_HEATING_FAILED                "Heating failed"
-#define MSG_T_THERMAL_RUNAWAY               "Thermal Runaway"
-#define MSG_T_MAXTEMP                       "MAXTEMP triggered"
-#define MSG_T_MINTEMP                       "MINTEMP triggered"
-#define MSG_ERR_PROBING_FAILED              "Probing Failed"
-#define MSG_ZPROBE_OUT_SER                  "Z Probe Past Bed"
-
-// Debug
-#define MSG_DEBUG_PREFIX                    "DEBUG:"
-#define MSG_DEBUG_OFF                       "off"
-#define MSG_DEBUG_ECHO                      "ECHO"
-#define MSG_DEBUG_INFO                      "INFO"
-#define MSG_DEBUG_ERRORS                    "ERRORS"
-#define MSG_DEBUG_DRYRUN                    "DRYRUN"
-#define MSG_DEBUG_COMMUNICATION             "COMMUNICATION"
-#define MSG_DEBUG_LEVELING                  "LEVELING"
-
-// LCD Menu Messages
-
-#define LANGUAGE_DATA_INCL_(M) STRINGIFY_(fontdata/langdata_##M.h)
-#define LANGUAGE_DATA_INCL(M) LANGUAGE_DATA_INCL_(M)
-
-#define LANGUAGE_INCL_(M) STRINGIFY_(../lcd/language/language_##M.h)
-#define LANGUAGE_INCL(M) LANGUAGE_INCL_(M)
-
-// Never translate these strings
-#define MSG_X "X"
-#define MSG_Y "Y"
-#define MSG_Z "Z"
-#define MSG_E "E"
-#if IS_KINEMATIC
-  #define MSG_A "A"
-  #define MSG_B "B"
-  #define MSG_C "C"
-#else
-  #define MSG_A "X"
-  #define MSG_B "Y"
-  #define MSG_C "Z"
-#endif
-#define MSG_X2 "X2"
-#define MSG_Y2 "Y2"
-#define MSG_Z2 "Z2"
-#define MSG_Z3 "Z3"
-#define MSG_Z4 "Z4"
-
-#define LCD_STR_A MSG_A
-#define LCD_STR_B MSG_B
-#define LCD_STR_C MSG_C
-#define LCD_STR_E MSG_E
-
 /**
  * Tool indexes for LCD display only
  *

Marlin/src/core/serial.cpp

   serialprintPGM(onoff ? on : off);
   if (post) serialprintPGM(post);
 }
-void serialprint_onoff(const bool onoff) { serialprintPGM(onoff ? PSTR(MSG_ON) : PSTR(MSG_OFF)); }
+void serialprint_onoff(const bool onoff) { serialprintPGM(onoff ? PSTR(STR_ON) : PSTR(STR_OFF)); }
 void serialprintln_onoff(const bool onoff) { serialprint_onoff(onoff); SERIAL_EOL(); }
 void serialprint_truefalse(const bool tf) { serialprintPGM(tf ? PSTR("true") : PSTR("false")); }
 

Marlin/src/feature/bltouch.cpp

       // The deploy might have failed or the probe is actually triggered (nozzle too low?) again
       if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPGM("BLTouch Recovery Failed");
 
-      SERIAL_ERROR_MSG(MSG_STOP_BLTOUCH);  // Tell the user something is wrong, needs action
+      SERIAL_ERROR_MSG(STR_STOP_BLTOUCH);  // Tell the user something is wrong, needs action
       stop();                              // but it's not too bad, no need to kill, allow restart
 
       return true;                         // Tell our caller we goofed in case he cares to know
 
       if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPGM("BLTouch Recovery Failed");
 
-      SERIAL_ERROR_MSG(MSG_STOP_BLTOUCH);  // Tell the user something is wrong, needs action
+      SERIAL_ERROR_MSG(STR_STOP_BLTOUCH);  // Tell the user something is wrong, needs action
       stop();                              // but it's not too bad, no need to kill, allow restart
 
       return true;                         // Tell our caller we goofed in case he cares to know

Marlin/src/feature/pause.cpp

 
   #if ENABLED(PREVENT_COLD_EXTRUSION)
     if (!DEBUGGING(DRYRUN) && thermalManager.targetTooColdToExtrude(active_extruder)) {
-      SERIAL_ECHO_MSG(MSG_ERR_HOTEND_TOO_COLD);
+      SERIAL_ECHO_MSG(STR_ERR_HOTEND_TOO_COLD);
       return false;
     }
   #endif
   #endif
 
   if (!DEBUGGING(DRYRUN) && unload_length && thermalManager.targetTooColdToExtrude(active_extruder)) {
-    SERIAL_ECHO_MSG(MSG_ERR_HOTEND_TOO_COLD);
+    SERIAL_ECHO_MSG(STR_ERR_HOTEND_TOO_COLD);
 
     #if HAS_LCD_MENU
       if (show_lcd) { // Show status screen

Marlin/src/feature/prusa_MMU2/mmu2.cpp

     ENABLE_AXIS_E0();
 
     SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR(MSG_ACTIVE_EXTRUDER, int(extruder));
+    SERIAL_ECHOLNPAIR(STR_ACTIVE_EXTRUDER, int(extruder));
 
     ui.reset_status();
   }

Marlin/src/feature/solenoid.cpp

         break;
     #endif
     default:
-      SERIAL_ECHO_MSG(MSG_INVALID_SOLENOID);
+      SERIAL_ECHO_MSG(STR_INVALID_SOLENOID);
       break;
   }
 }

Marlin/src/gcode/bedlevel/G42.cpp

     const int8_t iy = hasJ ? parser.value_int() : 0;
 
     if ((hasI && !WITHIN(ix, 0, GRID_MAX_POINTS_X - 1)) || (hasJ && !WITHIN(iy, 0, GRID_MAX_POINTS_Y - 1))) {
-      SERIAL_ECHOLNPGM(MSG_ERR_MESH_XY);
+      SERIAL_ECHOLNPGM(STR_ERR_MESH_XY);
       return;
     }
 

Marlin/src/gcode/bedlevel/M420.cpp

 
   // Error if leveling failed to enable or reenable
   if (to_enable && !planner.leveling_active)
-    SERIAL_ERROR_MSG(MSG_ERR_M420_FAILED);
+    SERIAL_ERROR_MSG(STR_ERR_M420_FAILED);
 
   SERIAL_ECHO_START();
   SERIAL_ECHOPGM("Bed Leveling ");
     if (planner.z_fade_height > 0.0)
       SERIAL_ECHOLN(planner.z_fade_height);
     else
-      SERIAL_ECHOLNPGM(MSG_OFF);
+      SERIAL_ECHOLNPGM(STR_OFF);
   #endif
 
   // Report change in position

Marlin/src/gcode/bedlevel/abl/M421.cpp

              hasQ = !hasZ && parser.seen('Q');
 
   if (!hasI || !hasJ || !(hasZ || hasQ))
-    SERIAL_ERROR_MSG(MSG_ERR_M421_PARAMETERS);
+    SERIAL_ERROR_MSG(STR_ERR_M421_PARAMETERS);
   else if (!WITHIN(ix, 0, GRID_MAX_POINTS_X - 1) || !WITHIN(iy, 0, GRID_MAX_POINTS_Y - 1))
-    SERIAL_ERROR_MSG(MSG_ERR_MESH_XY);
+    SERIAL_ERROR_MSG(STR_ERR_MESH_XY);
   else {
     z_values[ix][iy] = parser.value_linear_units() + (hasQ ? z_values[ix][iy] : 0);
     #if ENABLED(ABL_BILINEAR_SUBDIVISION)

Marlin/src/gcode/bedlevel/mbl/M421.cpp

   const bool hasZ = parser.seen('Z'), hasQ = !hasZ && parser.seen('Q');
 
   if (int(hasI && hasJ) + int(hasX && hasY) != 1 || !(hasZ || hasQ))
-    SERIAL_ERROR_MSG(MSG_ERR_M421_PARAMETERS);
+    SERIAL_ERROR_MSG(STR_ERR_M421_PARAMETERS);
   else if (ix < 0 || iy < 0)
-    SERIAL_ERROR_MSG(MSG_ERR_MESH_XY);
+    SERIAL_ERROR_MSG(STR_ERR_MESH_XY);
   else
     mbl.set_z(ix, iy, parser.value_linear_units() + (hasQ ? mbl.z_values[ix][iy] : 0));
 }

Marlin/src/gcode/bedlevel/ubl/M421.cpp

   if (hasC) ij = ubl.find_closest_mesh_point_of_type(REAL, current_position);
 
   if (int(hasC) + int(hasI && hasJ) != 1 || !(hasZ || hasQ || hasN))
-    SERIAL_ERROR_MSG(MSG_ERR_M421_PARAMETERS);
+    SERIAL_ERROR_MSG(STR_ERR_M421_PARAMETERS);
   else if (!WITHIN(ij.x, 0, GRID_MAX_POINTS_X - 1) || !WITHIN(ij.y, 0, GRID_MAX_POINTS_Y - 1))
-    SERIAL_ERROR_MSG(MSG_ERR_MESH_XY);
+    SERIAL_ERROR_MSG(STR_ERR_MESH_XY);
   else {
     float &zval = ubl.z_values[ij.x][ij.y];
     zval = hasN ? NAN : parser.value_linear_units() + (hasQ ? zval : 0);

Marlin/src/gcode/calibrate/G28.cpp

     // Disallow Z homing if X or Y are unknown
     if (!TEST(axis_known_position, X_AXIS) || !TEST(axis_known_position, Y_AXIS)) {
       LCD_MESSAGEPGM(MSG_ERR_Z_HOMING);
-      SERIAL_ECHO_MSG(MSG_ERR_Z_HOMING_SER);
+      SERIAL_ECHO_MSG(STR_ERR_Z_HOMING_SER);
       return;
     }
 
     }
     else {
       LCD_MESSAGEPGM(MSG_ZPROBE_OUT);
-      SERIAL_ECHO_MSG(MSG_ZPROBE_OUT_SER);
+      SERIAL_ECHO_MSG(STR_ZPROBE_OUT_SER);
     }
 
     if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPGM("<<< home_z_safely");
       #define _HOME_SYNC doZ        // Only for Z-axis
     #endif
     if (_HOME_SYNC)
-      SERIAL_ECHOLNPGM(MSG_Z_MOVE_COMP);
+      SERIAL_ECHOLNPGM(STR_Z_MOVE_COMP);
   #endif
 
   if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPGM("<<< G28");

Marlin/src/gcode/calibrate/M852.cpp

   #endif
 
   if (badval)
-    SERIAL_ECHOLNPGM(MSG_SKEW_MIN " " STRINGIFY(SKEW_FACTOR_MIN) " " MSG_SKEW_MAX " " STRINGIFY(SKEW_FACTOR_MAX));
+    SERIAL_ECHOLNPGM(STR_SKEW_MIN " " STRINGIFY(SKEW_FACTOR_MIN) " " STR_SKEW_MAX " " STRINGIFY(SKEW_FACTOR_MAX));
 
   // When skew is changed the current position changes
   if (setval) {

Marlin/src/gcode/config/M218.cpp

 
   if (!parser.seen("XYZ")) {
     SERIAL_ECHO_START();
-    SERIAL_ECHOPGM(MSG_HOTEND_OFFSET);
+    SERIAL_ECHOPGM(STR_HOTEND_OFFSET);
     HOTEND_LOOP() {
       SERIAL_CHAR(' ');
       SERIAL_ECHO(hotend_offset[e].x);

Marlin/src/gcode/config/M301.cpp

     SERIAL_EOL();
   }
   else
-    SERIAL_ERROR_MSG(MSG_INVALID_EXTRUDER);
+    SERIAL_ERROR_MSG(STR_INVALID_EXTRUDER);
 }
 
 #endif // PIDTEMP

Marlin/src/gcode/control/M111.cpp

 void GcodeSuite::M111() {
   if (parser.seen('S')) marlin_debug_flags = parser.byteval('S');
 
-  static const char str_debug_1[] PROGMEM = MSG_DEBUG_ECHO,
-                    str_debug_2[] PROGMEM = MSG_DEBUG_INFO,
-                    str_debug_4[] PROGMEM = MSG_DEBUG_ERRORS,
-                    str_debug_8[] PROGMEM = MSG_DEBUG_DRYRUN,
-                    str_debug_16[] PROGMEM = MSG_DEBUG_COMMUNICATION
+  static const char str_debug_1[] PROGMEM = STR_DEBUG_ECHO,
+                    str_debug_2[] PROGMEM = STR_DEBUG_INFO,
+                    str_debug_4[] PROGMEM = STR_DEBUG_ERRORS,
+                    str_debug_8[] PROGMEM = STR_DEBUG_DRYRUN,
+                    str_debug_16[] PROGMEM = STR_DEBUG_COMMUNICATION
                     #if ENABLED(DEBUG_LEVELING_FEATURE)
-                      , str_debug_lvl[] PROGMEM = MSG_DEBUG_LEVELING
+                      , str_debug_lvl[] PROGMEM = STR_DEBUG_LEVELING
                     #endif
                     ;
 
   };
 
   SERIAL_ECHO_START();
-  SERIAL_ECHOPGM(MSG_DEBUG_PREFIX);
+  SERIAL_ECHOPGM(STR_DEBUG_PREFIX);
   if (marlin_debug_flags) {
     uint8_t comma = 0;
     for (uint8_t i = 0; i < COUNT(debug_strings); i++) {
     }
   }
   else {
-    SERIAL_ECHOPGM(MSG_DEBUG_OFF);
+    SERIAL_ECHOPGM(STR_DEBUG_OFF);
     #if !defined(__AVR__) || !defined(USBCON)
       #if ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS)
         SERIAL_ECHOPAIR("\nBuffer Overruns: ", MYSERIAL0.buffer_overruns());

Marlin/src/gcode/control/M211.cpp

   const xyz_pos_t l_soft_min = soft_endstop.min.asLogical(),
                   l_soft_max = soft_endstop.max.asLogical();
   SERIAL_ECHO_START();
-  SERIAL_ECHOPGM(MSG_SOFT_ENDSTOPS);
+  SERIAL_ECHOPGM(STR_SOFT_ENDSTOPS);
   if (parser.seen('S')) soft_endstops_enabled = parser.value_bool();
   serialprint_onoff(soft_endstops_enabled);
-  print_xyz(l_soft_min, PSTR(MSG_SOFT_MIN), PSTR(" "));
-  print_xyz(l_soft_max, PSTR(MSG_SOFT_MAX));
+  print_xyz(l_soft_min, PSTR(STR_SOFT_MIN), PSTR(" "));
+  print_xyz(l_soft_max, PSTR(STR_SOFT_MAX));
 }
 
 #endif

Marlin/src/gcode/control/M605.cpp

       extruder_duplication_enabled = ena && (duplication_e_mask >= 3);
     }
     SERIAL_ECHO_START();
-    SERIAL_ECHOPGM(MSG_DUPLICATION_MODE);
+    SERIAL_ECHOPGM(STR_DUPLICATION_MODE);
     serialprint_onoff(extruder_duplication_enabled);
     if (ena) {
       SERIAL_ECHOPGM(" ( ");

Marlin/src/gcode/control/M80_M81.cpp

   #endif
 
   #if HAS_LCD_MENU
-    LCD_MESSAGEPGM_P(PSTR(MACHINE_NAME " " MSG_OFF "."));
+    LCD_MESSAGEPGM_P(PSTR(MACHINE_NAME " " STR_OFF "."));
   #endif
 }

Marlin/src/gcode/feature/pause/G60.cpp

   const uint8_t slot = parser.byteval('S');
 
   if (slot >= SAVED_POSITIONS) {
-    SERIAL_ERROR_MSG(MSG_INVALID_POS_SLOT STRINGIFY(SAVED_POSITIONS));
+    SERIAL_ERROR_MSG(STR_INVALID_POS_SLOT STRINGIFY(SAVED_POSITIONS));
     return;
   }
 
 
   #if ENABLED(SAVED_POSITIONS_DEBUG)
     const xyze_pos_t &pos = stored_position[slot];
-    DEBUG_ECHOPAIR_F(MSG_SAVED_POS " S", slot);
+    DEBUG_ECHOPAIR_F(STR_SAVED_POS " S", slot);
     DEBUG_ECHOPAIR_F(" : X", pos.x);
     DEBUG_ECHOPAIR_F_P(SP_Y_STR, pos.y);
     DEBUG_ECHOLNPAIR_F_P(SP_Z_STR, pos.z);

Marlin/src/gcode/feature/pause/G61.cpp

 
   #if SAVED_POSITIONS < 256
     if (slot >= SAVED_POSITIONS) {
-      SERIAL_ERROR_MSG(MSG_INVALID_POS_SLOT STRINGIFY(SAVED_POSITIONS));
+      SERIAL_ERROR_MSG(STR_INVALID_POS_SLOT STRINGIFY(SAVED_POSITIONS));
       return;
     }
   #endif
   const float fr = parser.linearval('F');
   if (fr > 0.0) feedrate_mm_s = MMM_TO_MMS(fr);
 
-  SERIAL_ECHOPAIR(MSG_RESTORING_POS " S", int(slot));
+  SERIAL_ECHOPAIR(STR_RESTORING_POS " S", int(slot));
   LOOP_XYZ(i) {
     destination[i] = parser.seen(axis_codes[i])
       ? stored_position[slot][i] + parser.value_axis_units((AxisEnum)i)

Marlin/src/gcode/gcode.cpp

     if (e < EXTRUDERS) return e;
     SERIAL_ECHO_START();
     SERIAL_CHAR('M'); SERIAL_ECHO(parser.codenum);
-    SERIAL_ECHOLNPAIR(" " MSG_INVALID_EXTRUDER " ", int(e));
+    SERIAL_ECHOLNPAIR(" " STR_INVALID_EXTRUDER " ", int(e));
     return -1;
   }
   return active_extruder;
   SERIAL_ECHO_START();
   SERIAL_CHAR('M'); SERIAL_ECHO(parser.codenum);
   if (e == -1)
-    SERIAL_ECHOLNPGM(" " MSG_E_STEPPER_NOT_SPECIFIED);
+    SERIAL_ECHOLNPGM(" " STR_E_STEPPER_NOT_SPECIFIED);
   else
-    SERIAL_ECHOLNPAIR(" " MSG_INVALID_E_STEPPER " ", int(e));
+    SERIAL_ECHOLNPAIR(" " STR_INVALID_E_STEPPER " ", int(e));
   return -1;
 }
 
       switch (busy_state) {
         case IN_HANDLER:
         case IN_PROCESS:
-          SERIAL_ECHO_MSG(MSG_BUSY_PROCESSING);
+          SERIAL_ECHO_MSG(STR_BUSY_PROCESSING);
           break;
         case PAUSED_FOR_USER:
-          SERIAL_ECHO_MSG(MSG_BUSY_PAUSED_FOR_USER);
+          SERIAL_ECHO_MSG(STR_BUSY_PAUSED_FOR_USER);
           break;
         case PAUSED_FOR_INPUT:
-          SERIAL_ECHO_MSG(MSG_BUSY_PAUSED_FOR_INPUT);
+          SERIAL_ECHO_MSG(STR_BUSY_PAUSED_FOR_INPUT);
           break;
         default:
           break;

Marlin/src/gcode/geometry/M206_M428.cpp

     if (!WITHIN(diff[i], -20, 20) && home_dir((AxisEnum)i) > 0)
       diff[i] = -current_position[i];
     if (!WITHIN(diff[i], -20, 20)) {
-      SERIAL_ERROR_MSG(MSG_ERR_M428_TOO_FAR);
+      SERIAL_ERROR_MSG(STR_ERR_M428_TOO_FAR);
       LCD_ALERTMESSAGEPGM_P(PSTR("Err: Too far!"));
       BUZZ(200, 40);
       return;

Marlin/src/gcode/host/M115.cpp

  */
 void GcodeSuite::M115() {
 
-  SERIAL_ECHOLNPGM(MSG_M115_REPORT);
+  SERIAL_ECHOLNPGM(STR_M115_REPORT);
 
   #if ENABLED(EXTENDED_CAPABILITIES_REPORT)
 

Marlin/src/gcode/lcd/M145.cpp

 void GcodeSuite::M145() {
   const uint8_t material = (uint8_t)parser.intval('S');
   if (material >= COUNT(ui.preheat_hotend_temp))
-    SERIAL_ERROR_MSG(MSG_ERR_MATERIAL_INDEX);
+    SERIAL_ERROR_MSG(STR_ERR_MATERIAL_INDEX);
   else {
     int v;
     if (parser.seenval('H')) {

Marlin/src/gcode/motion/G0_G1.cpp

       #endif
       if (_MOVE_SYNC) {
         planner.synchronize();
-        SERIAL_ECHOLNPGM(MSG_Z_MOVE_COMP);
+        SERIAL_ECHOLNPGM(STR_Z_MOVE_COMP);
       }
     #endif
   }

Marlin/src/gcode/motion/G2_G3.cpp

         // P indicates number of circles to do
         int8_t circles_to_do = parser.byteval('P');
         if (!WITHIN(circles_to_do, 0, 100))
-          SERIAL_ERROR_MSG(MSG_ERR_ARC_ARGS);
+          SERIAL_ERROR_MSG(STR_ERR_ARC_ARGS);
 
         while (circles_to_do--)
           plan_arc(current_position, arc_offset, clockwise);
       reset_stepper_timeout();
     }
     else
-      SERIAL_ERROR_MSG(MSG_ERR_ARC_ARGS);
+      SERIAL_ERROR_MSG(STR_ERR_ARC_ARGS);
   }
 }
 

Marlin/src/gcode/motion/G4.cpp

 
   planner.synchronize();
   #if ENABLED(NANODLP_Z_SYNC)
-    SERIAL_ECHOLNPGM(MSG_Z_MOVE_COMP);
+    SERIAL_ECHOLNPGM(STR_Z_MOVE_COMP);
   #endif
 
   if (!ui.has_status()) LCD_MESSAGEPGM(MSG_DWELL);

Marlin/src/gcode/motion/G5.cpp

 
     #if ENABLED(CNC_WORKSPACE_PLANES)
       if (workspace_plane != PLANE_XY) {
-        SERIAL_ERROR_MSG(MSG_ERR_BAD_PLANE_MODE);
+        SERIAL_ERROR_MSG(STR_ERR_BAD_PLANE_MODE);
         return;
       }
     #endif

Marlin/src/gcode/motion/M290.cpp

     ) {
       probe.offset.z += offs;
       SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR(MSG_PROBE_OFFSET MSG_Z ": ", probe.offset.z);
+      SERIAL_ECHOLNPAIR(STR_PROBE_OFFSET STR_Z ": ", probe.offset.z);
     }
     else {
       #if ENABLED(BABYSTEP_HOTEND_Z_OFFSET)
         hotend_offset[active_extruder].z -= offs;
         SERIAL_ECHO_START();
-        SERIAL_ECHOLNPAIR(MSG_PROBE_OFFSET MSG_Z ": ", hotend_offset[active_extruder].z);
+        SERIAL_ECHOLNPAIR(STR_PROBE_OFFSET STR_Z ": ", hotend_offset[active_extruder].z);
       #endif
     }
   }
     SERIAL_ECHO_START();
 
     #if ENABLED(BABYSTEP_ZPROBE_OFFSET)
-      SERIAL_ECHOLNPAIR(MSG_PROBE_OFFSET " " MSG_Z, probe.offset.z);
+      SERIAL_ECHOLNPAIR(STR_PROBE_OFFSET " " STR_Z, probe.offset.z);
     #endif
 
     #if ENABLED(BABYSTEP_HOTEND_Z_OFFSET)

Marlin/src/gcode/parser.cpp

 #endif // CNC_COORDINATE_SYSTEMS
 
 void GCodeParser::unknown_command_warning() {
-  SERIAL_ECHO_MSG(MSG_UNKNOWN_COMMAND, command_ptr, "\"");
+  SERIAL_ECHO_MSG(STR_UNKNOWN_COMMAND, command_ptr, "\"");
 }
 
 #if ENABLED(DEBUG_GCODE_PARSER)

Marlin/src/gcode/probe/M851.cpp

   if (!parser.seen("XYZ")) {
     SERIAL_ECHOLNPAIR_P(
       #if HAS_PROBE_XY_OFFSET
-        PSTR(MSG_PROBE_OFFSET " X"), probe.offset_xy.x, SP_Y_STR, probe.offset_xy.y, SP_Z_STR
+        PSTR(STR_PROBE_OFFSET " X"), probe.offset_xy.x, SP_Y_STR, probe.offset_xy.y, SP_Z_STR
       #else
-        PSTR(MSG_PROBE_OFFSET " X0 Y0 Z")
+        PSTR(STR_PROBE_OFFSET " X0 Y0 Z")
       #endif
       , probe.offset.z
     );

Marlin/src/gcode/queue.cpp

   if (*cmd == 0 || *cmd == '\n' || *cmd == '\r') return true;
 
   if (_enqueue(cmd)) {
-    SERIAL_ECHO_MSG(MSG_ENQUEUEING, cmd, "\"");
+    SERIAL_ECHO_MSG(STR_ENQUEUEING, cmd, "\"");
     return true;
   }
   return false;
     PORT_REDIRECT(pn);                    // Reply to the serial port that sent the command
   #endif
   if (!send_ok[index_r]) return;
-  SERIAL_ECHOPGM(MSG_OK);
+  SERIAL_ECHOPGM(STR_OK);
   #if ENABLED(ADVANCED_OK)
     char* p = command_buffer[index_r];
     if (*p == 'N') {
     PORT_REDIRECT(pn);                    // Reply to the serial port that sent the command
   #endif
   SERIAL_FLUSH();
-  SERIAL_ECHOPGM(MSG_RESEND);
+  SERIAL_ECHOPGM(STR_RESEND);
   SERIAL_ECHOLN(last_N + 1);
   ok_to_send();
 }
     static millis_t last_command_time = 0;
     const millis_t ms = millis();
     if (length == 0 && !serial_data_available() && ELAPSED(ms, last_command_time + NO_TIMEOUTS)) {
-      SERIAL_ECHOLNPGM(MSG_WAIT);
+      SERIAL_ECHOLNPGM(STR_WAIT);
       last_command_time = ms;
     }
   #endif
           gcode_N = strtol(npos + 1, nullptr, 10);
 
           if (gcode_N != last_N + 1 && !M110)
-            return gcode_line_error(PSTR(MSG_ERR_LINE_NO), i);
+            return gcode_line_error(PSTR(STR_ERR_LINE_NO), i);
 
           char *apos = strrchr(command, '*');
           if (apos) {
             uint8_t checksum = 0, count = uint8_t(apos - command);
             while (count) checksum ^= command[--count];
             if (strtol(apos + 1, nullptr, 10) != checksum)
-              return gcode_line_error(PSTR(MSG_ERR_CHECKSUM_MISMATCH), i);
+              return gcode_line_error(PSTR(STR_ERR_CHECKSUM_MISMATCH), i);
           }
           else
-            return gcode_line_error(PSTR(MSG_ERR_NO_CHECKSUM), i);
+            return gcode_line_error(PSTR(STR_ERR_NO_CHECKSUM), i);
 
           last_N = gcode_N;
         }
         #if ENABLED(SDSUPPORT)
           // Pronterface "M29" and "M29 " has no line number
           else if (card.flag.saving && !is_M29(command))
-            return gcode_line_error(PSTR(MSG_ERR_NO_CHECKSUM), i);
+            return gcode_line_error(PSTR(STR_ERR_NO_CHECKSUM), i);
         #endif
 
         //
                 case 5:
               #endif
                 PORT_REDIRECT(i);                      // Reply to the serial port that sent the command
-                SERIAL_ECHOLNPGM(MSG_ERR_STOPPED);
+                SERIAL_ECHOLNPGM(STR_ERR_STOPPED);
                 LCD_MESSAGEPGM(MSG_STOPPED);
                 break;
             }
     while (length < BUFSIZE && !card_eof) {
       const int16_t n = card.get();
       card_eof = card.eof();
-      if (n < 0 && !card_eof) { SERIAL_ERROR_MSG(MSG_SD_ERR_READ); continue; }
+      if (n < 0 && !card_eof) { SERIAL_ERROR_MSG(STR_SD_ERR_READ); continue; }
 
       const char sd_char = (char)n;
       const bool is_eol = sd_char == '\n' || sd_char == '\r';
       if (is_M29(command)) {
         // M29 closes the file
         card.closefile();
-        SERIAL_ECHOLNPGM(MSG_FILE_SAVED);
+        SERIAL_ECHOLNPGM(STR_FILE_SAVED);
 
         #if !defined(__AVR__) || !defined(USBCON)
           #if ENABLED(SERIAL_STATS_DROPPED_RX)

Marlin/src/gcode/sdcard/M20.cpp

  * M20: List SD card to serial output
  */
 void GcodeSuite::M20() {
-  SERIAL_ECHOLNPGM(MSG_BEGIN_FILE_LIST);
+  SERIAL_ECHOLNPGM(STR_BEGIN_FILE_LIST);
   card.ls();
-  SERIAL_ECHOLNPGM(MSG_END_FILE_LIST);
+  SERIAL_ECHOLNPGM(STR_END_FILE_LIST);
 }
 
 #endif // SDSUPPORT

Marlin/src/gcode/temperature/M105.cpp

   const int8_t target_extruder = get_target_extruder_from_command();
   if (target_extruder < 0) return;
 
-  SERIAL_ECHOPGM(MSG_OK);
+  SERIAL_ECHOPGM(STR_OK);
 
   #if HAS_TEMP_SENSOR
 

Marlin/src/gcode/temperature/M303.cpp

   #endif
   const heater_ind_t e = (heater_ind_t)parser.intval('E');
   if (!WITHIN(e, SI, EI)) {
-    SERIAL_ECHOLNPGM(MSG_PID_BAD_EXTRUDER_NUM);
+    SERIAL_ECHOLNPGM(STR_PID_BAD_EXTRUDER_NUM);
     #if ENABLED(EXTENSIBLE_UI)
       ExtUI::OnPidTuning(ExtUI::result_t::PID_BAD_EXTRUDER_NUM);
     #endif

Marlin/src/lcd/extensible_ui/lib/ftdi_eve_touch_ui/marlin_events.cpp

       SERIAL_ECHOLNPAIR("OnPidTuning:", rst);
       switch (rst) {
         case PID_BAD_EXTRUDER_NUM:
-          StatusScreen::setStatusMessage(MSG_PID_BAD_EXTRUDER_NUM);
+          StatusScreen::setStatusMessage(STR_PID_BAD_EXTRUDER_NUM);
           break;
         case PID_TEMP_TOO_HIGH:
-          StatusScreen::setStatusMessage(MSG_PID_TEMP_TOO_HIGH);
+          StatusScreen::setStatusMessage(STR_PID_TEMP_TOO_HIGH);
           break;
         case PID_TUNING_TIMEOUT:
-          StatusScreen::setStatusMessage(MSG_PID_TIMEOUT);
+          StatusScreen::setStatusMessage(STR_PID_TIMEOUT);
           break;
         case PID_DONE:
-          StatusScreen::setStatusMessage(MSG_PID_AUTOTUNE_FINISHED);
+          StatusScreen::setStatusMessage(STR_PID_AUTOTUNE_FINISHED);
           break;
       }
       GOTO_SCREEN(StatusScreen);

Marlin/src/lcd/extensible_ui/lib/ftdi_eve_touch_ui/screens/advanced_settings_menu.cpp

           1
         #endif
       )
-      .tag(4) .button( BTN_POS(1,2), BTN_SIZE(1,1), GET_TEXT_F(MSG_OFFSETS_MENU))
+      .tag(4) .button( BTN_POS(1,2), BTN_SIZE(1,1), GET_TEXT_F(STR_OFFSETS_MENU))
       .enabled(
         #if EITHER(LIN_ADVANCE, FILAMENT_RUNOUT_SENSOR)
           1
           1
         #endif
       )
-      .tag(4) .button( BTN_POS(1,2),  BTN_SIZE(1,1), GET_TEXT_F(MSG_OFFSETS_MENU))
+      .tag(4) .button( BTN_POS(1,2),  BTN_SIZE(1,1), GET_TEXT_F(STR_OFFSETS_MENU))
       .tag(12).button( BTN_POS(3,4),  BTN_SIZE(1,1), GET_TEXT_F(MSG_LCD_ENDSTOPS))
       .tag(5) .button( BTN_POS(2,2),  BTN_SIZE(1,1), GET_TEXT_F(MSG_VELOCITY))
       .tag(6) .button( BTN_POS(2,3),  BTN_SIZE(1,1), GET_TEXT_F(MSG_ACCELERATION))

Marlin/src/lcd/extensible_ui/lib/ftdi_eve_touch_ui/screens/bio_advanced_settings.cpp

           1
         #endif
       )
-      .tag(6) .button( BTN_POS(1,5), BTN_SIZE(1,1), GET_TEXT_F(MSG_OFFSETS_MENU))
+      .tag(6) .button( BTN_POS(1,5), BTN_SIZE(1,1), GET_TEXT_F(STR_OFFSETS_MENU))
 
 
       .tag(7) .button( BTN_POS(2,1), BTN_SIZE(1,1), GET_TEXT_F(MSG_STEPS_PER_MM))

Marlin/src/lcd/extensible_ui/lib/ftdi_eve_touch_ui/screens/endstop_state_screen.cpp

   .text(BTN_POS(1,1), BTN_SIZE(6,1), GET_TEXT_F(MSG_LCD_ENDSTOPS))
   .font(font_tiny);
   #if PIN_EXISTS(X_MAX)
-    PIN_ENABLED (1, 2, PSTR(MSG_X_MAX), X_MAX, X_MAX_ENDSTOP_INVERTING)
+    PIN_ENABLED (1, 2, PSTR(STR_X_MAX), X_MAX, X_MAX_ENDSTOP_INVERTING)
   #else
-    PIN_DISABLED(1, 2, PSTR(MSG_X_MAX), X_MAX)
+    PIN_DISABLED(1, 2, PSTR(STR_X_MAX), X_MAX)
   #endif
   #if PIN_EXISTS(Y_MAX)
-    PIN_ENABLED (3, 2, PSTR(MSG_Y_MAX), Y_MAX, Y_MAX_ENDSTOP_INVERTING)
+    PIN_ENABLED (3, 2, PSTR(STR_Y_MAX), Y_MAX, Y_MAX_ENDSTOP_INVERTING)
   #else
-    PIN_DISABLED(3, 2, PSTR(MSG_Y_MAX), Y_MAX)
+    PIN_DISABLED(3, 2, PSTR(STR_Y_MAX), Y_MAX)
   #endif
   #if PIN_EXISTS(Z_MAX)
-    PIN_ENABLED (5, 2, PSTR(MSG_Z_MAX), Z_MAX, Z_MAX_ENDSTOP_INVERTING)
+    PIN_ENABLED (5, 2, PSTR(STR_Z_MAX), Z_MAX, Z_MAX_ENDSTOP_INVERTING)
   #else
-    PIN_DISABLED(5, 2, PSTR(MSG_Z_MAX), Z_MAX)
+    PIN_DISABLED(5, 2, PSTR(STR_Z_MAX), Z_MAX)
   #endif
   #if PIN_EXISTS(X_MIN)
-    PIN_ENABLED (1, 3, PSTR(MSG_X_MIN), X_MIN, X_MIN_ENDSTOP_INVERTING)
+    PIN_ENABLED (1, 3, PSTR(STR_X_MIN), X_MIN, X_MIN_ENDSTOP_INVERTING)
   #else
-    PIN_DISABLED(1, 3, PSTR(MSG_X_MIN), X_MIN)
+    PIN_DISABLED(1, 3, PSTR(STR_X_MIN), X_MIN)
   #endif
   #if PIN_EXISTS(Y_MIN)
-    PIN_ENABLED (3, 3, PSTR(MSG_Y_MIN), Y_MIN, Y_MIN_ENDSTOP_INVERTING)
+    PIN_ENABLED (3, 3, PSTR(STR_Y_MIN), Y_MIN, Y_MIN_ENDSTOP_INVERTING)
   #else
-    PIN_DISABLED(3, 3, PSTR(MSG_Y_MIN), Y_MIN)
+    PIN_DISABLED(3, 3, PSTR(STR_Y_MIN), Y_MIN)
   #endif
   #if PIN_EXISTS(Z_MIN)
-    PIN_ENABLED (5, 3, PSTR(MSG_Z_MIN), Z_MIN, Z_MIN_ENDSTOP_INVERTING)
+    PIN_ENABLED (5, 3, PSTR(STR_Z_MIN), Z_MIN, Z_MIN_ENDSTOP_INVERTING)
   #else
-    PIN_DISABLED(5, 3, PSTR(MSG_Z_MIN), Z_MIN)
+    PIN_DISABLED(5, 3, PSTR(STR_Z_MIN), Z_MIN)
   #endif
   #if ENABLED(FILAMENT_RUNOUT_SENSOR) && PIN_EXISTS(FIL_RUNOUT)
     PIN_ENABLED (1, 4, GET_TEXT_F(MSG_RUNOUT_1), FIL_RUNOUT, FIL_RUNOUT_INVERTING)
     PIN_DISABLED(3, 4, GET_TEXT_F(MSG_RUNOUT_2), FIL_RUNOUT2)
   #endif
   #if PIN_EXISTS(Z_MIN_PROBE)
-    PIN_ENABLED (5, 4, PSTR(MSG_Z_PROBE), Z_MIN_PROBE, Z_MIN_PROBE_ENDSTOP_INVERTING)
+    PIN_ENABLED (5, 4, PSTR(STR_Z_PROBE), Z_MIN_PROBE, Z_MIN_PROBE_ENDSTOP_INVERTING)
   #else
-    PIN_DISABLED(5, 4, PSTR(MSG_Z_PROBE), Z_MIN_PROBE)
+    PIN_DISABLED(5, 4, PSTR(STR_Z_PROBE), Z_MIN_PROBE)
   #endif
 
   #if HAS_SOFTWARE_ENDSTOPS

Marlin/src/lcd/extensible_ui/lib/ftdi_eve_touch_ui/screens/nozzle_offsets_screen.cpp

   widgets_t w(what);
   w.precision(2).units(GET_TEXT_F(MSG_UNITS_MM));
 
-  w.heading(                          GET_TEXT_F(MSG_OFFSETS_MENU));
+  w.heading(                          GET_TEXT_F(STR_OFFSETS_MENU));
   w.color(Theme::x_axis).adjuster(2,  GET_TEXT_F(MSG_AXIS_X), ExtUI::getNozzleOffset_mm(X, E1));
   w.color(Theme::y_axis).adjuster(4,  GET_TEXT_F(MSG_AXIS_Y), ExtUI::getNozzleOffset_mm(Y, E1));
   w.color(Theme::z_axis).adjuster(6,  GET_TEXT_F(MSG_AXIS_Z), ExtUI::getNozzleOffset_mm(Z, E1));

Marlin/src/lcd/extensible_ui/lib/ftdi_eve_touch_ui/screens/nudge_nozzle_screen.cpp

 
       #if HOTENDS > 1
         format_position(str, getNozzleOffset_mm(X, E1), getNozzleOffset_mm(Y, E1), getNozzleOffset_mm(Z, E1));
-        w.text_field(0, GET_TEXT_F(MSG_OFFSETS_MENU), str);
+        w.text_field(0, GET_TEXT_F(STR_OFFSETS_MENU), str);
       #endif
     }
   #endif

Marlin/src/lcd/extui_dgus_lcd.cpp

       SERIAL_ECHOLNPAIR("OnPidTuning:",rst);
       switch(rst) {
         case PID_BAD_EXTRUDER_NUM:
-          ScreenHandler.setstatusmessagePGM(PSTR(MSG_PID_BAD_EXTRUDER_NUM));
+          ScreenHandler.setstatusmessagePGM(PSTR(STR_PID_BAD_EXTRUDER_NUM));
           break;
         case PID_TEMP_TOO_HIGH:
-          ScreenHandler.setstatusmessagePGM(PSTR(MSG_PID_TEMP_TOO_HIGH));
+          ScreenHandler.setstatusmessagePGM(PSTR(STR_PID_TEMP_TOO_HIGH));
           break;
         case PID_TUNING_TIMEOUT:
-          ScreenHandler.setstatusmessagePGM(PSTR(MSG_PID_TIMEOUT));
+          ScreenHandler.setstatusmessagePGM(PSTR(STR_PID_TIMEOUT));
           break;
         case PID_DONE:
-          ScreenHandler.setstatusmessagePGM(PSTR(MSG_PID_AUTOTUNE_FINISHED));
+          ScreenHandler.setstatusmessagePGM(PSTR(STR_PID_AUTOTUNE_FINISHED));
           break;
       }
       ScreenHandler.GotoScreen(DGUSLCD_SCREEN_MAIN);

Marlin/src/lcd/menu/menu_advanced.cpp

     BACK_ITEM(MSG_ADVANCED_SETTINGS);
     #define EDIT_CURRENT_PWM(LABEL,I) EDIT_ITEM_P(long5, PSTR(LABEL), &stepper.motor_current_setting[I], 100, 2000, stepper.refresh_motor_power)
     #if PIN_EXISTS(MOTOR_CURRENT_PWM_XY)
-      EDIT_CURRENT_PWM(MSG_X MSG_Y, 0);
+      EDIT_CURRENT_PWM(STR_X STR_Y, 0);
     #endif
     #if PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
-      EDIT_CURRENT_PWM(MSG_Z, 1);
+      EDIT_CURRENT_PWM(STR_Z, 1);
     #endif
     #if PIN_EXISTS(MOTOR_CURRENT_PWM_E)
-      EDIT_CURRENT_PWM(MSG_E, 2);
+      EDIT_CURRENT_PWM(STR_E, 2);
     #endif
     END_MENU();
   }

Marlin/src/lcd/menu/menu_configuration.cpp

     #endif
 
     #if HAS_HOTEND_OFFSET
-      SUBMENU(MSG_OFFSETS_MENU, menu_tool_offsets);
+      SUBMENU(STR_OFFSETS_MENU, menu_tool_offsets);
     #endif
 
     #if ENABLED(DUAL_X_CARRIAGE)

Marlin/src/lcd/menu/menu_tmc.cpp

   START_MENU();
   BACK_ITEM(MSG_TMC_DRIVERS);
   #if AXIS_IS_TMC(X)
-    TMC_EDIT_STORED_I_RMS(X, MSG_X);
+    TMC_EDIT_STORED_I_RMS(X, STR_X);
   #endif
   #if AXIS_IS_TMC(Y)
-    TMC_EDIT_STORED_I_RMS(Y, MSG_Y);
+    TMC_EDIT_STORED_I_RMS(Y, STR_Y);
   #endif
   #if AXIS_IS_TMC(Z)
-    TMC_EDIT_STORED_I_RMS(Z, MSG_Z);
+    TMC_EDIT_STORED_I_RMS(Z, STR_Z);
   #endif
   #if AXIS_IS_TMC(X2)
-    TMC_EDIT_STORED_I_RMS(X2, MSG_X2);
+    TMC_EDIT_STORED_I_RMS(X2, STR_X2);
   #endif
   #if AXIS_IS_TMC(Y2)
-    TMC_EDIT_STORED_I_RMS(Y2, MSG_Y2);
+    TMC_EDIT_STORED_I_RMS(Y2, STR_Y2);
   #endif
   #if AXIS_IS_TMC(Z2)
-    TMC_EDIT_STORED_I_RMS(Z2, MSG_Z2);
+    TMC_EDIT_STORED_I_RMS(Z2, STR_Z2);
   #endif
   #if AXIS_IS_TMC(Z3)
-    TMC_EDIT_STORED_I_RMS(Z3, MSG_Z3);
+    TMC_EDIT_STORED_I_RMS(Z3, STR_Z3);
   #endif
   #if AXIS_IS_TMC(Z4)
-    TMC_EDIT_STORED_I_RMS(Z4, MSG_Z4);
+    TMC_EDIT_STORED_I_RMS(Z4, STR_Z4);
   #endif
   #if AXIS_IS_TMC(E0)
     TMC_EDIT_STORED_I_RMS(E0, LCD_STR_E0);
     START_MENU();
     BACK_ITEM(MSG_TMC_DRIVERS);
     #if AXIS_HAS_STEALTHCHOP(X)
-      TMC_EDIT_STORED_HYBRID_THRS(X, MSG_X);
+      TMC_EDIT_STORED_HYBRID_THRS(X, STR_X);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Y)
-      TMC_EDIT_STORED_HYBRID_THRS(Y, MSG_Y);
+      TMC_EDIT_STORED_HYBRID_THRS(Y, STR_Y);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Z)
-      TMC_EDIT_STORED_HYBRID_THRS(Z, MSG_Z);
+      TMC_EDIT_STORED_HYBRID_THRS(Z, STR_Z);
     #endif
     #if AXIS_HAS_STEALTHCHOP(X2)
-      TMC_EDIT_STORED_HYBRID_THRS(X2, MSG_X2);
+      TMC_EDIT_STORED_HYBRID_THRS(X2, STR_X2);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Y2)
-      TMC_EDIT_STORED_HYBRID_THRS(Y2, MSG_Y2);
+      TMC_EDIT_STORED_HYBRID_THRS(Y2, STR_Y2);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Z2)
-      TMC_EDIT_STORED_HYBRID_THRS(Z2, MSG_Z2);
+      TMC_EDIT_STORED_HYBRID_THRS(Z2, STR_Z2);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Z3)
-      TMC_EDIT_STORED_HYBRID_THRS(Z3, MSG_Z3);
+      TMC_EDIT_STORED_HYBRID_THRS(Z3, STR_Z3);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Z4)
-      TMC_EDIT_STORED_HYBRID_THRS(Z4, MSG_Z4);
+      TMC_EDIT_STORED_HYBRID_THRS(Z4, STR_Z4);
     #endif
     #if AXIS_HAS_STEALTHCHOP(E0)
       TMC_EDIT_STORED_HYBRID_THRS(E0, LCD_STR_E0);
     STATIC_ITEM(MSG_TMC_STEALTH_ENABLED);
     BACK_ITEM(MSG_TMC_DRIVERS);
     #if AXIS_HAS_STEALTHCHOP(X)
-      TMC_EDIT_STEP_MODE(X, MSG_X);
+      TMC_EDIT_STEP_MODE(X, STR_X);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Y)
-      TMC_EDIT_STEP_MODE(Y, MSG_Y);
+      TMC_EDIT_STEP_MODE(Y, STR_Y);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Z)
-      TMC_EDIT_STEP_MODE(Z, MSG_Z);
+      TMC_EDIT_STEP_MODE(Z, STR_Z);
     #endif
     #if AXIS_HAS_STEALTHCHOP(X2)
-      TMC_EDIT_STEP_MODE(X2, MSG_X2);
+      TMC_EDIT_STEP_MODE(X2, STR_X2);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Y2)
-      TMC_EDIT_STEP_MODE(Y2, MSG_Y2);
+      TMC_EDIT_STEP_MODE(Y2, STR_Y2);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Z2)
-      TMC_EDIT_STEP_MODE(Z2, MSG_Z2);
+      TMC_EDIT_STEP_MODE(Z2, STR_Z2);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Z3)
-      TMC_EDIT_STEP_MODE(Z3, MSG_Z3);
+      TMC_EDIT_STEP_MODE(Z3, STR_Z3);
     #endif
     #if AXIS_HAS_STEALTHCHOP(Z4)
-      TMC_EDIT_STEP_MODE(Z4, MSG_Z4);
+      TMC_EDIT_STEP_MODE(Z4, STR_Z4);
     #endif
     #if AXIS_HAS_STEALTHCHOP(E0)
       TMC_EDIT_STEP_MODE(E0, LCD_STR_E0);

Marlin/src/module/endstops.cpp

     #define ENDSTOP_HIT_TEST_Z() _ENDSTOP_HIT_TEST(Z,'Z')
 
     SERIAL_ECHO_START();
-    SERIAL_ECHOPGM(MSG_ENDSTOPS_HIT);
+    SERIAL_ECHOPGM(STR_ENDSTOPS_HIT);
     ENDSTOP_HIT_TEST_X();
     ENDSTOP_HIT_TEST_Y();
     ENDSTOP_HIT_TEST_Z();
 static void print_es_state(const bool is_hit, PGM_P const label=nullptr) {
   if (label) serialprintPGM(label);
   SERIAL_ECHOPGM(": ");
-  serialprintPGM(is_hit ? PSTR(MSG_ENDSTOP_HIT) : PSTR(MSG_ENDSTOP_OPEN));
+  serialprintPGM(is_hit ? PSTR(STR_ENDSTOP_HIT) : PSTR(STR_ENDSTOP_OPEN));
   SERIAL_EOL();
 }
 
   #if ENABLED(BLTOUCH)
     bltouch._set_SW_mode();
   #endif
-  SERIAL_ECHOLNPGM(MSG_M119_REPORT);
+  SERIAL_ECHOLNPGM(STR_M119_REPORT);
   #define ES_REPORT(S) print_es_state(READ(S##_PIN) != S##_ENDSTOP_INVERTING, PSTR(MSG_##S))
   #if HAS_X_MIN
     ES_REPORT(X_MIN);
     ES_REPORT(Z4_MAX);
   #endif
   #if HAS_CUSTOM_PROBE_PIN
-    print_es_state(READ(Z_MIN_PROBE_PIN) != Z_MIN_PROBE_ENDSTOP_INVERTING, PSTR(MSG_Z_PROBE));
+    print_es_state(READ(Z_MIN_PROBE_PIN) != Z_MIN_PROBE_ENDSTOP_INVERTING, PSTR(STR_Z_PROBE));
   #endif
   #if HAS_FILAMENT_SENSOR
     #if NUM_RUNOUT_SENSORS == 1
-      print_es_state(READ(FIL_RUNOUT_PIN) != FIL_RUNOUT_INVERTING, PSTR(MSG_FILAMENT_RUNOUT_SENSOR));
+      print_es_state(READ(FIL_RUNOUT_PIN) != FIL_RUNOUT_INVERTING, PSTR(STR_FILAMENT_RUNOUT_SENSOR));
     #else
       #define _CASE_RUNOUT(N) case N: pin = FIL_RUNOUT##N##_PIN; break;
       for (uint8_t i = 1; i <= NUM_RUNOUT_SENSORS; i++) {
           default: continue;
           REPEAT_S(1, INCREMENT(NUM_RUNOUT_SENSORS), _CASE_RUNOUT)
         }
-        SERIAL_ECHOPGM(MSG_FILAMENT_RUNOUT_SENSOR);
+        SERIAL_ECHOPGM(STR_FILAMENT_RUNOUT_SENSOR);
         if (i > 1) SERIAL_CHAR(' ', '0' + i);
         print_es_state(extDigitalRead(pin) != FIL_RUNOUT_INVERTING);
       }

Marlin/src/module/motion.cpp

 
       #if ENABLED(PREVENT_COLD_EXTRUSION)
         ignore_e = thermalManager.tooColdToExtrude(active_extruder);
-        if (ignore_e) SERIAL_ECHO_MSG(MSG_ERR_COLD_EXTRUDE_STOP);
+        if (ignore_e) SERIAL_ECHO_MSG(STR_ERR_COLD_EXTRUDE_STOP);
       #endif
 
       #if ENABLED(PREVENT_LENGTHY_EXTRUDE)
             MIXER_STEPPER_LOOP(e) {
               if (e_delta * collector[e] > (EXTRUDE_MAXLENGTH)) {
                 ignore_e = true;
-                SERIAL_ECHO_MSG(MSG_ERR_LONG_EXTRUDE_STOP);
+                SERIAL_ECHO_MSG(STR_ERR_LONG_EXTRUDE_STOP);
                 break;
               }
             }
           #else
             ignore_e = true;
-            SERIAL_ECHO_MSG(MSG_ERR_LONG_EXTRUDE_STOP);
+            SERIAL_ECHO_MSG(STR_ERR_LONG_EXTRUDE_STOP);
           #endif
         }
       #endif

Marlin/src/module/planner.cpp

             position_float.e = target_float.e;
           #endif
           de = 0; // no difference
-          SERIAL_ECHO_MSG(MSG_ERR_COLD_EXTRUDE_STOP);
+          SERIAL_ECHO_MSG(STR_ERR_COLD_EXTRUDE_STOP);
         }
       #endif // PREVENT_COLD_EXTRUSION
       #if ENABLED(PREVENT_LENGTHY_EXTRUDE)
               position_float.e = target_float.e;
             #endif
             de = 0; // no difference
-            SERIAL_ECHO_MSG(MSG_ERR_LONG_EXTRUDE_STOP);
+            SERIAL_ECHO_MSG(STR_ERR_LONG_EXTRUDE_STOP);
           }
         }
       #endif // PREVENT_LENGTHY_EXTRUDE

Marlin/src/module/printcounter.cpp

 
 #if HAS_SERVICE_INTERVALS
   inline void _service_when(char buffer[], const char * const msg, const uint32_t when) {
-    SERIAL_ECHOPGM(MSG_STATS);
+    SERIAL_ECHOPGM(STR_STATS);
     serialprintPGM(msg);
     SERIAL_ECHOLNPAIR(" in ", duration_t(when).toString(buffer));
   }
 void PrintCounter::showStats() {
   char buffer[21];
 
-  SERIAL_ECHOPGM(MSG_STATS);
+  SERIAL_ECHOPGM(STR_STATS);
   SERIAL_ECHOLNPAIR(
     "Prints: ", data.totalPrints,
     ", Finished: ", data.finishedPrints,
                     - ((isRunning() || isPaused()) ? 1 : 0) // Remove 1 from failures with an active counter
   );
 
-  SERIAL_ECHOPGM(MSG_STATS);
+  SERIAL_ECHOPGM(STR_STATS);
   duration_t elapsed = data.printTime;
   elapsed.toString(buffer);
   SERIAL_ECHOPAIR("Total time: ", buffer);
     SERIAL_CHAR(')');
   #endif
 
-  SERIAL_ECHOPAIR("\n" MSG_STATS "Filament used: ", data.filamentUsed / 1000);
+  SERIAL_ECHOPAIR("\n" STR_STATS "Filament used: ", data.filamentUsed / 1000);
   SERIAL_CHAR('m');
   SERIAL_EOL();
 

Marlin/src/module/probe.cpp

         _BV(X_AXIS)
       #endif
     )) {
-      SERIAL_ERROR_MSG(MSG_STOP_UNHOMED);
+      SERIAL_ERROR_MSG(STR_STOP_UNHOMED);
       stop();
       return true;
     }
   if (isnan(measured_z)) {
     stow();
     LCD_MESSAGEPGM(MSG_LCD_PROBING_FAILED);
-    SERIAL_ERROR_MSG(MSG_ERR_PROBING_FAILED);
+    SERIAL_ERROR_MSG(STR_ERR_PROBING_FAILED);
   }
 
   if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPGM("<<< Probe::probe_at_point");

Marlin/src/module/stepper.cpp

   #endif
 
   #if CORE_IS_XY || CORE_IS_XZ || ENABLED(DELTA) || IS_SCARA
-    SERIAL_ECHOPAIR(MSG_COUNT_A, pos.x, " B:", pos.y);
+    SERIAL_ECHOPAIR(STR_COUNT_A, pos.x, " B:", pos.y);
   #else
-    SERIAL_ECHOPAIR(MSG_COUNT_X, pos.x, " Y:", pos.y);
+    SERIAL_ECHOPAIR(STR_COUNT_X, pos.x, " Y:", pos.y);
   #endif
   #if CORE_IS_XZ || CORE_IS_YZ || ENABLED(DELTA)
     SERIAL_ECHOLNPAIR(" C:", pos.z);

Marlin/src/module/temperature.cpp

 
 Temperature thermalManager;
 
+const char str_t_thermal_runaway[] PROGMEM = STR_T_THERMAL_RUNAWAY,
+           str_t_heating_failed[] PROGMEM = STR_T_HEATING_FAILED;
+
 /**
  * Macros to include the heater id in temp errors. The compiler's dead-code
  * elimination should (hopefully) optimize out the unused strings.
     #endif
 
     if (target > GHV(BED_MAXTEMP - 10, temp_range[heater].maxtemp - 15)) {
-      SERIAL_ECHOLNPGM(MSG_PID_TEMP_TOO_HIGH);
+      SERIAL_ECHOLNPGM(STR_PID_TEMP_TOO_HIGH);
       #if ENABLED(EXTENSIBLE_UI)
         ExtUI::OnPidTuning(ExtUI::result_t::PID_TEMP_TOO_HIGH);
       #endif
       return;
     }
 
-    SERIAL_ECHOLNPGM(MSG_PID_AUTOTUNE_START);
+    SERIAL_ECHOLNPGM(STR_PID_AUTOTUNE_START);
 
     disable_all_heaters();
 
               LIMIT(bias, 20, max_pow - 20);
               d = (bias > max_pow >> 1) ? max_pow - 1 - bias : bias;
 
-              SERIAL_ECHOPAIR(MSG_BIAS, bias, MSG_D, d, MSG_T_MIN, minT, MSG_T_MAX, maxT);
+              SERIAL_ECHOPAIR(STR_BIAS, bias, STR_D_COLON, d, STR_T_MIN, minT, STR_T_MAX, maxT);
               if (cycles > 2) {
                 const float Ku = (4.0f * d) / (float(M_PI) * (maxT - minT) * 0.5f),
                             Tu = float(t_low + t_high) * 0.001f,
                             pf = isbed ? 0.2f : 0.6f,
                             df = isbed ? 1.0f / 3.0f : 1.0f / 8.0f;
 
-                SERIAL_ECHOPAIR(MSG_KU, Ku, MSG_TU, Tu);
+                SERIAL_ECHOPAIR(STR_KU, Ku, STR_TU, Tu);
                 if (isbed) { // Do not remove this otherwise PID autotune won't work right for the bed!
                   tune_pid.Kp = Ku * 0.2f;
                   tune_pid.Ki = 2 * tune_pid.Kp / Tu;
                   tune_pid.Kd = tune_pid.Kp * Tu / 3;
                   SERIAL_ECHOLNPGM("\n" " No overshoot"); // Works far better for the bed. Classic and some have bad ringing.
-                  SERIAL_ECHOLNPAIR(MSG_KP, tune_pid.Kp, MSG_KI, tune_pid.Ki, MSG_KD, tune_pid.Kd);
+                  SERIAL_ECHOLNPAIR(STR_KP, tune_pid.Kp, STR_KI, tune_pid.Ki, STR_KD, tune_pid.Kd);
                 }
                 else {
                   tune_pid.Kp = Ku * pf;
                   tune_pid.Kd = tune_pid.Kp * Tu * df;
                   tune_pid.Ki = 2 * tune_pid.Kp / Tu;
-                  SERIAL_ECHOLNPGM("\n" MSG_CLASSIC_PID);
-                  SERIAL_ECHOLNPAIR(MSG_KP, tune_pid.Kp, MSG_KI, tune_pid.Ki, MSG_KD, tune_pid.Kd);
+                  SERIAL_ECHOLNPGM("\n" STR_CLASSIC_PID);
+                  SERIAL_ECHOLNPAIR(STR_KP, tune_pid.Kp, STR_KI, tune_pid.Ki, STR_KD, tune_pid.Kd);
                 }
 
                 /**
         #define MAX_OVERSHOOT_PID_AUTOTUNE 30
       #endif
       if (current_temp > target + MAX_OVERSHOOT_PID_AUTOTUNE) {
-        SERIAL_ECHOLNPGM(MSG_PID_TEMP_TOO_HIGH);
+        SERIAL_ECHOLNPGM(STR_PID_TEMP_TOO_HIGH);
         #if ENABLED(EXTENSIBLE_UI)
           ExtUI::OnPidTuning(ExtUI::result_t::PID_TEMP_TOO_HIGH);
         #endif
                 if (current_temp > watch_temp_target) heated = true;     // - Flag if target temperature reached
               }
               else if (ELAPSED(ms, temp_change_ms))                 // Watch timer expired
-                _temp_error(heater, PSTR(MSG_T_HEATING_FAILED), GET_TEXT(MSG_HEATING_FAILED_LCD));
+                _temp_error(heater, str_t_heating_failed, GET_TEXT(MSG_HEATING_FAILED_LCD));
             }
             else if (current_temp < target - (MAX_OVERSHOOT_PID_AUTOTUNE)) // Heated, then temperature fell too far?
-              _temp_error(heater, PSTR(MSG_T_THERMAL_RUNAWAY), GET_TEXT(MSG_THERMAL_RUNAWAY));
+              _temp_error(heater, str_t_thermal_runaway, GET_TEXT(MSG_THERMAL_RUNAWAY));
           }
         #endif
       } // every 2 seconds
         #if ENABLED(EXTENSIBLE_UI)
           ExtUI::OnPidTuning(ExtUI::result_t::PID_TUNING_TIMEOUT);
         #endif
-        SERIAL_ECHOLNPGM(MSG_PID_TIMEOUT);
+        SERIAL_ECHOLNPGM(STR_PID_TIMEOUT);
         break;
       }
 
       if (cycles > ncycles && cycles > 2) {
-        SERIAL_ECHOLNPGM(MSG_PID_AUTOTUNE_FINISHED);
+        SERIAL_ECHOLNPGM(STR_PID_AUTOTUNE_FINISHED);
 
         #if HAS_PID_FOR_BOTH
           const char * const estring = GHV(PSTR("bed"), NUL_STR);
   ) {
     SERIAL_ERROR_START();
     serialprintPGM(serial_msg);
-    SERIAL_ECHOPGM(MSG_STOPPED_HEATER);
+    SERIAL_ECHOPGM(STR_STOPPED_HEATER);
     if (heater >= 0) SERIAL_ECHO((int)heater);
     #if HAS_HEATED_CHAMBER
-      else if (heater == H_CHAMBER) SERIAL_ECHOPGM(MSG_HEATER_CHAMBER);
+      else if (heater == H_CHAMBER) SERIAL_ECHOPGM(STR_HEATER_CHAMBER);
     #endif
-    else SERIAL_ECHOPGM(MSG_HEATER_BED);
+    else SERIAL_ECHOPGM(STR_HEATER_BED);
     SERIAL_EOL();
   }
 
 }
 
 void Temperature::max_temp_error(const heater_ind_t heater) {
-  _temp_error(heater, PSTR(MSG_T_MAXTEMP), GET_TEXT(MSG_ERR_MAXTEMP));
+  _temp_error(heater, PSTR(STR_T_MAXTEMP), GET_TEXT(MSG_ERR_MAXTEMP));
 }
 
 void Temperature::min_temp_error(const heater_ind_t heater) {
-  _temp_error(heater, PSTR(MSG_T_MINTEMP), GET_TEXT(MSG_ERR_MINTEMP));
+  _temp_error(heater, PSTR(STR_T_MINTEMP), GET_TEXT(MSG_ERR_MINTEMP));
 }
 
 #if HOTENDS
         if (ee == active_extruder) {
           SERIAL_ECHO_START();
           SERIAL_ECHOPAIR(
-            MSG_PID_DEBUG, ee,
-            MSG_PID_DEBUG_INPUT, temp_hotend[ee].celsius,
-            MSG_PID_DEBUG_OUTPUT, pid_output
+            STR_PID_DEBUG, ee,
+            STR_PID_DEBUG_INPUT, temp_hotend[ee].celsius,
+            STR_PID_DEBUG_OUTPUT, pid_output
           );
           #if DISABLED(PID_OPENLOOP)
           {
             SERIAL_ECHOPAIR(
-              MSG_PID_DEBUG_PTERM, work_pid[ee].Kp,
-              MSG_PID_DEBUG_ITERM, work_pid[ee].Ki,
-              MSG_PID_DEBUG_DTERM, work_pid[ee].Kd
+              STR_PID_DEBUG_PTERM, work_pid[ee].Kp,
+              STR_PID_DEBUG_ITERM, work_pid[ee].Ki,
+              STR_PID_DEBUG_DTERM, work_pid[ee].Kd
               #if ENABLED(PID_EXTRUSION_SCALING)
-                , MSG_PID_DEBUG_CTERM, work_pid[ee].Kc
+                , STR_PID_DEBUG_CTERM, work_pid[ee].Kc
               #endif
             );
           }
       SERIAL_ECHOLNPAIR(
         " PID_BED_DEBUG : Input ", temp_bed.celsius, " Output ", pid_output,
         #if DISABLED(PID_OPENLOOP)
-          MSG_PID_DEBUG_PTERM, work_pid.Kp,
-          MSG_PID_DEBUG_ITERM, work_pid.Ki,
-          MSG_PID_DEBUG_DTERM, work_pid.Kd,
+          STR_PID_DEBUG_PTERM, work_pid.Kp,
+          STR_PID_DEBUG_ITERM, work_pid.Ki,
+          STR_PID_DEBUG_DTERM, work_pid.Kd,
         #endif
       );
     }
     HOTEND_LOOP() {
       #if ENABLED(THERMAL_PROTECTION_HOTENDS)
         if (degHotend(e) > temp_range[e].maxtemp)
-          _temp_error((heater_ind_t)e, PSTR(MSG_T_THERMAL_RUNAWAY), GET_TEXT(MSG_THERMAL_RUNAWAY));
+          _temp_error((heater_ind_t)e, str_t_thermal_runaway, GET_TEXT(MSG_THERMAL_RUNAWAY));
       #endif
 
       #if HEATER_IDLE_HANDLER
         // Make sure temperature is increasing
         if (watch_hotend[e].next_ms && ELAPSED(ms, watch_hotend[e].next_ms)) {  // Time to check this extruder?
           if (degHotend(e) < watch_hotend[e].target)                            // Failed to increase enough?
-            _temp_error((heater_ind_t)e, PSTR(MSG_T_HEATING_FAILED), GET_TEXT(MSG_HEATING_FAILED_LCD));
+            _temp_error((heater_ind_t)e, str_t_heating_failed, GET_TEXT(MSG_HEATING_FAILED_LCD));
           else                                                                  // Start again if the target is still far off
             start_watching_hotend(e);
         }
       #if ENABLED(TEMP_SENSOR_1_AS_REDUNDANT)
         // Make sure measured temperatures are close together
         if (ABS(temp_hotend[0].celsius - redundant_temperature) > MAX_REDUNDANT_TEMP_SENSOR_DIFF)
-          _temp_error(H_E0, PSTR(MSG_REDUNDANCY), GET_TEXT(MSG_ERR_REDUNDANT_TEMP));
+          _temp_error(H_E0, PSTR(STR_REDUNDANCY), GET_TEXT(MSG_ERR_REDUNDANT_TEMP));
       #endif
 
     } // HOTEND_LOOP
 
     #if ENABLED(THERMAL_PROTECTION_BED)
       if (degBed() > BED_MAXTEMP)
-        _temp_error(H_BED, PSTR(MSG_T_THERMAL_RUNAWAY), GET_TEXT(MSG_THERMAL_RUNAWAY));
+        _temp_error(H_BED, str_t_thermal_runaway, GET_TEXT(MSG_THERMAL_RUNAWAY));
     #endif
 
     #if WATCH_BED
       // Make sure temperature is increasing
       if (watch_bed.elapsed(ms)) {        // Time to check the bed?
         if (degBed() < watch_bed.target)                                // Failed to increase enough?
-          _temp_error(H_BED, PSTR(MSG_T_HEATING_FAILED), GET_TEXT(MSG_HEATING_FAILED_LCD));
+          _temp_error(H_BED, str_t_heating_failed, GET_TEXT(MSG_HEATING_FAILED_LCD));
         else                                                            // Start again if the target is still far off
           start_watching_bed();
       }
 
     #if ENABLED(THERMAL_PROTECTION_CHAMBER)
       if (degChamber() > CHAMBER_MAXTEMP)
-        _temp_error(H_CHAMBER, PSTR(MSG_T_THERMAL_RUNAWAY), GET_TEXT(MSG_THERMAL_RUNAWAY));
+        _temp_error(H_CHAMBER, str_t_thermal_runaway, GET_TEXT(MSG_THERMAL_RUNAWAY));
     #endif
 
     #if WATCH_CHAMBER
       // Make sure temperature is increasing
       if (watch_chamber.elapsed(ms)) {              // Time to check the chamber?
         if (degChamber() < watch_chamber.target)    // Failed to increase enough?
-          _temp_error(H_CHAMBER, PSTR(MSG_T_HEATING_FAILED), GET_TEXT(MSG_HEATING_FAILED_LCD));
+          _temp_error(H_CHAMBER, str_t_heating_failed, GET_TEXT(MSG_HEATING_FAILED_LCD));
         else
           start_watching_chamber();                 // Start again if the target is still far off
       }
       {
         SERIAL_ERROR_START();
         SERIAL_ECHO((int)e);
-        SERIAL_ECHOLNPGM(MSG_INVALID_EXTRUDER_NUM);
+        SERIAL_ECHOLNPGM(STR_INVALID_EXTRUDER_NUM);
         kill();
         return 0;
       }
         sm.state = TRRunaway;
 
       case TRRunaway:
-        _temp_error(heater_id, PSTR(MSG_T_THERMAL_RUNAWAY), GET_TEXT(MSG_THERMAL_RUNAWAY));
+        _temp_error(heater_id, str_t_thermal_runaway, GET_TEXT(MSG_THERMAL_RUNAWAY));
     }
   }
 

Marlin/src/module/tool_change.cpp

   inline void invalid_extruder_error(const uint8_t e) {
     SERIAL_ECHO_START();
     SERIAL_CHAR('T'); SERIAL_ECHO(int(e));
-    SERIAL_CHAR(' '); SERIAL_ECHOLNPGM(MSG_INVALID_EXTRUDER);
+    SERIAL_CHAR(' '); SERIAL_ECHOLNPGM(STR_INVALID_EXTRUDER);
   }
 #endif
 
       #endif
       if (should_swap) {
         if (too_cold) {
-          SERIAL_ECHO_MSG(MSG_ERR_HOTEND_TOO_COLD);
+          SERIAL_ECHO_MSG(STR_ERR_HOTEND_TOO_COLD);
           #if ENABLED(SINGLENOZZLE)
             active_extruder = new_tool;
             return;
     #endif
 
     SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR(MSG_ACTIVE_EXTRUDER, int(active_extruder));
+    SERIAL_ECHOLNPAIR(STR_ACTIVE_EXTRUDER, int(active_extruder));
 
   #endif // EXTRUDERS > 1
 }

Marlin/src/sd/cardreader.cpp

       SdFile child;
       if (!child.open(&parent, dosFilename, O_READ)) {
         SERIAL_ECHO_START();
-        SERIAL_ECHOLNPAIR(MSG_SD_CANT_OPEN_SUBDIR, dosFilename);
+        SERIAL_ECHOLNPAIR(STR_SD_CANT_OPEN_SUBDIR, dosFilename);
       }
       printListing(child, path);
       // close() is done automatically by destructor of SdFile
       if (!dir.open(&diveDir, segment, O_READ)) {
         SERIAL_EOL();
         SERIAL_ECHO_START();
-        SERIAL_ECHOPAIR(MSG_SD_CANT_OPEN_SUBDIR, segment);
+        SERIAL_ECHOPAIR(STR_SD_CANT_OPEN_SUBDIR, segment);
         break;
       }
 
     #if defined(LCD_SDSS) && (LCD_SDSS != SDSS)
       && !sd2card.init(SPI_SPEED, LCD_SDSS)
     #endif
-  ) SERIAL_ECHO_MSG(MSG_SD_INIT_FAIL);
+  ) SERIAL_ECHO_MSG(STR_SD_INIT_FAIL);
   else if (!volume.init(&sd2card))
-    SERIAL_ERROR_MSG(MSG_SD_VOL_INIT_FAIL);
+    SERIAL_ERROR_MSG(STR_SD_VOL_INIT_FAIL);
   else if (!root.openRoot(&volume))
-    SERIAL_ERROR_MSG(MSG_SD_OPENROOT_FAIL);
+    SERIAL_ERROR_MSG(STR_SD_OPENROOT_FAIL);
   else {
     flag.mounted = true;
-    SERIAL_ECHO_MSG(MSG_SD_CARD_OK);
+    SERIAL_ECHO_MSG(STR_SD_CARD_OK);
     #if ENABLED(EEPROM_SETTINGS) && NONE(FLASH_EEPROM_EMULATION, SPI_EEPROM, I2C_EEPROM)
       settings.first_load();
     #endif
 }
 
 void openFailed(const char * const fname) {
-  SERIAL_ECHOLNPAIR(MSG_SD_OPEN_FILE_FAIL, fname, ".");
+  SERIAL_ECHOLNPAIR(STR_SD_OPEN_FILE_FAIL, fname, ".");
 }
 
 void announceOpen(const uint8_t doing, const char * const path) {
   if (file.open(curDir, fname, O_READ)) {
     filesize = file.fileSize();
     sdpos = 0;
-    SERIAL_ECHOLNPAIR(MSG_SD_FILE_OPENED, fname, MSG_SD_SIZE, filesize);
-    SERIAL_ECHOLNPGM(MSG_SD_FILE_SELECTED);
+    SERIAL_ECHOLNPAIR(STR_SD_FILE_OPENED, fname, STR_SD_SIZE, filesize);
+    SERIAL_ECHOLNPGM(STR_SD_FILE_SELECTED);
 
     selectFileByName(fname);
     ui.set_status(longFilename[0] ? longFilename : fname);
     openFailed(fname);
 }
 
+inline void echo_write_to_file(char * const fname) {
+  SERIAL_ECHOLNPAIR(STR_SD_WRITE_TO_FILE, fname);
+}
+
 //
 // Open a file by DOS path for write
 //
     #if ENABLED(EMERGENCY_PARSER)
       emergency_parser.disable();
     #endif
-    SERIAL_ECHOLNPAIR(MSG_SD_WRITE_TO_FILE, fname);
+    echo_write_to_file(fname);
     ui.set_status(fname);
   }
   else
 
 void CardReader::report_status() {
   if (isPrinting()) {
-    SERIAL_ECHOPGM(MSG_SD_PRINTING_BYTE);
+    SERIAL_ECHOPGM(STR_SD_PRINTING_BYTE);
     SERIAL_ECHO(sdpos);
     SERIAL_CHAR('/');
     SERIAL_ECHOLN(filesize);
   }
   else
-    SERIAL_ECHOLNPGM(MSG_SD_NOT_PRINTING);
+    SERIAL_ECHOLNPGM(STR_SD_NOT_PRINTING);
 }
 
 void CardReader::write_command(char * const buf) {
   end[3] = '\0';
   file.write(begin);
 
-  if (file.writeError) SERIAL_ERROR_MSG(MSG_SD_ERR_WRITE_TO_FILE);
+  if (file.writeError) SERIAL_ERROR_MSG(STR_SD_ERR_WRITE_TO_FILE);
 }
 
 //
 
     // Open curDir
     if (!sub->open(curDir, dosSubdirname, O_READ)) {
-      SERIAL_ECHOLNPAIR(MSG_SD_OPEN_FILE_FAIL, dosSubdirname, ".");
+      SERIAL_ECHOLNPAIR(STR_SD_OPEN_FILE_FAIL, dosSubdirname, ".");
       return nullptr;
     }
 
   }
   else {
     SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR(MSG_SD_CANT_ENTER_SUBDIR, relpath);
+    SERIAL_ECHOLNPAIR(STR_SD_CANT_ENTER_SUBDIR, relpath);
   }
 }
 
     if (!isMounted()) return;
     if (recovery.file.isOpen()) return;
     if (!recovery.file.open(&root, recovery.filename, read ? O_READ : O_CREAT | O_WRITE | O_TRUNC | O_SYNC))
-      SERIAL_ECHOLNPAIR(MSG_SD_OPEN_FILE_FAIL, recovery.filename, ".");
+      SERIAL_ECHOLNPAIR(STR_SD_OPEN_FILE_FAIL, recovery.filename, ".");
     else if (!read)
-      SERIAL_ECHOLNPAIR(MSG_SD_WRITE_TO_FILE, recovery.filename);
+      echo_write_to_file(recovery.filename);
   }
 
   // Removing the job recovery file currently requires closing