diff --git a/Marlin/src/core/debug_section.h b/Marlin/src/core/debug_section.h
index 2862d35af..ef1511e6f 100644
--- a/Marlin/src/core/debug_section.h
+++ b/Marlin/src/core/debug_section.h
@@ -44,6 +44,6 @@ private:
       SERIAL_ECHOPGM_P(the_msg);
     }
     SERIAL_CHAR(' ');
-    print_xyz(current_position);
+    print_pos(current_position);
   }
 };
diff --git a/Marlin/src/core/language.h b/Marlin/src/core/language.h
index de29535f8..cabdde983 100644
--- a/Marlin/src/core/language.h
+++ b/Marlin/src/core/language.h
@@ -277,14 +277,6 @@
 #define STR_REMINDER_SAVE_SETTINGS          "Remember to save!"
 #define STR_PASSWORD_SET                    "Password is "
 
-// 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"
@@ -386,6 +378,14 @@
 #define LCD_STR_E6 "E" LCD_STR_N6
 #define LCD_STR_E7 "E" LCD_STR_N7
 
+// Include localized 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)
+
 // Use superscripts, if possible. Evaluated at point of use.
 #define SUPERSCRIPT_TWO   TERN(NOT_EXTENDED_ISO10646_1_5X7, "^2", "²")
 #define SUPERSCRIPT_THREE TERN(NOT_EXTENDED_ISO10646_1_5X7, "^3", "³")
diff --git a/Marlin/src/core/serial.cpp b/Marlin/src/core/serial.cpp
index 28442594c..b4184fcd6 100644
--- a/Marlin/src/core/serial.cpp
+++ b/Marlin/src/core/serial.cpp
@@ -101,7 +101,7 @@ void print_bin(uint16_t val) {
   }
 }
 
-void print_xyz(const_float_t x, const_float_t y, const_float_t z, PGM_P const prefix/*=nullptr*/, PGM_P const suffix/*=nullptr*/) {
+void print_pos(const_float_t x, const_float_t y, const_float_t z, PGM_P const prefix/*=nullptr*/, PGM_P const suffix/*=nullptr*/) {
   if (prefix) serialprintPGM(prefix);
   SERIAL_ECHOPAIR_P(SP_X_STR, x, SP_Y_STR, y, SP_Z_STR, z);
   if (suffix) serialprintPGM(suffix); else SERIAL_EOL();
diff --git a/Marlin/src/core/serial.h b/Marlin/src/core/serial.h
index 5c08be5c9..74b96dbb6 100644
--- a/Marlin/src/core/serial.h
+++ b/Marlin/src/core/serial.h
@@ -310,11 +310,11 @@ void serialprint_truefalse(const bool tf);
 void serial_spaces(uint8_t count);
 
 void print_bin(const uint16_t val);
-void print_xyz(const_float_t x, const_float_t y, const_float_t z, PGM_P const prefix=nullptr, PGM_P const suffix=nullptr);
+void print_pos(const_float_t x, const_float_t y, const_float_t z, PGM_P const prefix=nullptr, PGM_P const suffix=nullptr);
 
-inline void print_xyz(const xyz_pos_t &xyz, PGM_P const prefix=nullptr, PGM_P const suffix=nullptr) {
-  print_xyz(xyz.x, xyz.y, xyz.z, prefix, suffix);
+inline void print_pos(const xyz_pos_t &xyz, PGM_P const prefix=nullptr, PGM_P const suffix=nullptr) {
+  print_pos(xyz.x, xyz.y, xyz.z, prefix, suffix);
 }
 
-#define SERIAL_POS(SUFFIX,VAR) do { print_xyz(VAR, PSTR("  " STRINGIFY(VAR) "="), PSTR(" : " SUFFIX "\n")); }while(0)
-#define SERIAL_XYZ(PREFIX,V...) do { print_xyz(V, PSTR(PREFIX), nullptr); }while(0)
+#define SERIAL_POS(SUFFIX,VAR) do { print_pos(VAR, PSTR("  " STRINGIFY(VAR) "="), PSTR(" : " SUFFIX "\n")); }while(0)
+#define SERIAL_XYZ(PREFIX,V...) do { print_pos(V, PSTR(PREFIX), nullptr); }while(0)
diff --git a/Marlin/src/core/types.h b/Marlin/src/core/types.h
index 79a79b739..4011473aa 100644
--- a/Marlin/src/core/types.h
+++ b/Marlin/src/core/types.h
@@ -29,6 +29,16 @@
 class __FlashStringHelper;
 typedef const __FlashStringHelper *progmem_str;
 
+//
+// Conditional type assignment magic. For example...
+//
+// typename IF<(MYOPT==12), int, float>::type myvar;
+//
+template <bool, class L, class R>
+struct IF { typedef R type; };
+template <class L, class R>
+struct IF<true, L, R> { typedef L type; };
+
 //
 // Enumerated axis indices
 //
@@ -57,16 +67,6 @@ enum AxisEnum : uint8_t {
 #define LOOP_ABCE(VAR) LOOP_S_LE_N(VAR, A_AXIS, E_AXIS)
 #define LOOP_ABCE_N(VAR) LOOP_S_L_N(VAR, A_AXIS, XYZE_N)
 
-//
-// Conditional type assignment magic. For example...
-//
-// typename IF<(MYOPT==12), int, float>::type myvar;
-//
-template <bool, class L, class R>
-struct IF { typedef R type; };
-template <class L, class R>
-struct IF<true, L, R> { typedef L type; };
-
 //
 // feedRate_t is just a humble float
 //
diff --git a/Marlin/src/gcode/calibrate/G425.cpp b/Marlin/src/gcode/calibrate/G425.cpp
index 0918bc9d4..2fb450226 100644
--- a/Marlin/src/gcode/calibrate/G425.cpp
+++ b/Marlin/src/gcode/calibrate/G425.cpp
@@ -194,16 +194,20 @@ float measuring_movement(const AxisEnum axis, const int dir, const bool stop_sta
 inline float measure(const AxisEnum axis, const int dir, const bool stop_state, float * const backlash_ptr, const float uncertainty) {
   const bool fast = uncertainty == CALIBRATION_MEASUREMENT_UNKNOWN;
 
-  // Save position
-  destination = current_position;
-  const float start_pos = destination[axis];
+  // Save the current position of the specified axis
+  const float start_pos = current_position[axis];
+
+  // Take a measurement. Only the specified axis will be affected.
   const float measured_pos = measuring_movement(axis, dir, stop_state, fast);
+
   // Measure backlash
   if (backlash_ptr && !fast) {
     const float release_pos = measuring_movement(axis, -dir, !stop_state, fast);
     *backlash_ptr = ABS(release_pos - measured_pos);
   }
-  // Return to starting position
+
+  // Move back to the starting position
+  destination = current_position;
   destination[axis] = start_pos;
   do_blocking_move_to(destination, MMM_TO_MMS(CALIBRATION_FEEDRATE_TRAVEL));
   return measured_pos;
@@ -235,12 +239,12 @@ inline void probe_side(measurements_t &m, const float uncertainty, const side_t
       }
     #endif
     #if AXIS_CAN_CALIBRATE(X)
+      case RIGHT: dir = -1;
       case LEFT:  axis = X_AXIS; break;
-      case RIGHT: axis = X_AXIS; dir = -1; break;
     #endif
     #if AXIS_CAN_CALIBRATE(Y)
+      case BACK:  dir = -1;
       case FRONT: axis = Y_AXIS; break;
-      case BACK:  axis = Y_AXIS; dir = -1; break;
     #endif
     default: return;
   }
@@ -303,16 +307,8 @@ inline void probe_sides(measurements_t &m, const float uncertainty) {
 
   // The difference between the known and the measured location
   // of the calibration object is the positional error
-  m.pos_error.x = (0
-    #if HAS_X_CENTER
-      + true_center.x - m.obj_center.x
-    #endif
-  );
-  m.pos_error.y = (0
-    #if HAS_Y_CENTER
-      + true_center.y - m.obj_center.y
-    #endif
-  );
+  m.pos_error.x = TERN0(HAS_X_CENTER, true_center.x - m.obj_center.x);
+  m.pos_error.y = TERN0(HAS_Y_CENTER, true_center.y - m.obj_center.y);
   m.pos_error.z = true_center.z - m.obj_center.z;
 }
 
@@ -589,12 +585,12 @@ void GcodeSuite::G425() {
   SET_SOFT_ENDSTOP_LOOSE(true);
 
   measurements_t m;
-  float uncertainty = parser.seenval('U') ? parser.value_float() : CALIBRATION_MEASUREMENT_UNCERTAIN;
+  const float uncertainty = parser.floatval('U', CALIBRATION_MEASUREMENT_UNCERTAIN);
 
-  if (parser.seen('B'))
+  if (parser.seen_test('B'))
     calibrate_backlash(m, uncertainty);
-  else if (parser.seen('T'))
-    calibrate_toolhead(m, uncertainty, parser.has_value() ? parser.value_int() : active_extruder);
+  else if (parser.seen_test('T'))
+    calibrate_toolhead(m, uncertainty, parser.intval('T', active_extruder));
   #if ENABLED(CALIBRATION_REPORTING)
     else if (parser.seen('V')) {
       probe_sides(m, uncertainty);
diff --git a/Marlin/src/gcode/config/M200-M205.cpp b/Marlin/src/gcode/config/M200-M205.cpp
index cb17fc45a..55cfc1bf4 100644
--- a/Marlin/src/gcode/config/M200-M205.cpp
+++ b/Marlin/src/gcode/config/M200-M205.cpp
@@ -87,7 +87,7 @@ void GcodeSuite::M201() {
   #endif
 
   LOOP_XYZE(i) {
-    if (parser.seen(axis_codes[i])) {
+    if (parser.seenval(axis_codes[i])) {
       const uint8_t a = (i == E_AXIS ? uint8_t(E_AXIS_N(target_extruder)) : i);
       planner.set_max_acceleration(a, parser.value_axis_units((AxisEnum)a));
     }
@@ -105,7 +105,7 @@ void GcodeSuite::M203() {
   if (target_extruder < 0) return;
 
   LOOP_XYZE(i)
-    if (parser.seen(axis_codes[i])) {
+    if (parser.seenval(axis_codes[i])) {
       const uint8_t a = (i == E_AXIS ? uint8_t(E_AXIS_N(target_extruder)) : i);
       planner.set_max_feedrate(a, parser.value_axis_units((AxisEnum)a));
     }
@@ -147,24 +147,14 @@ void GcodeSuite::M204() {
  *    J = Junction Deviation (mm) (If not using CLASSIC_JERK)
  */
 void GcodeSuite::M205() {
-  #if HAS_JUNCTION_DEVIATION
-    #define J_PARAM  "J"
-  #else
-    #define J_PARAM
-  #endif
-  #if HAS_CLASSIC_JERK
-    #define XYZE_PARAM "XYZE"
-  #else
-    #define XYZE_PARAM
-  #endif
-  if (!parser.seen("BST" J_PARAM XYZE_PARAM)) return;
+  if (!parser.seen("BST" TERN_(HAS_JUNCTION_DEVIATION, "J") TERN_(HAS_CLASSIC_JERK, "XYZE"))) return;
 
   //planner.synchronize();
-  if (parser.seen('B')) planner.settings.min_segment_time_us = parser.value_ulong();
-  if (parser.seen('S')) planner.settings.min_feedrate_mm_s = parser.value_linear_units();
-  if (parser.seen('T')) planner.settings.min_travel_feedrate_mm_s = parser.value_linear_units();
+  if (parser.seenval('B')) planner.settings.min_segment_time_us = parser.value_ulong();
+  if (parser.seenval('S')) planner.settings.min_feedrate_mm_s = parser.value_linear_units();
+  if (parser.seenval('T')) planner.settings.min_travel_feedrate_mm_s = parser.value_linear_units();
   #if HAS_JUNCTION_DEVIATION
-    if (parser.seen('J')) {
+    if (parser.seenval('J')) {
       const float junc_dev = parser.value_linear_units();
       if (WITHIN(junc_dev, 0.01f, 0.3f)) {
         planner.junction_deviation_mm = junc_dev;
@@ -175,9 +165,9 @@ void GcodeSuite::M205() {
     }
   #endif
   #if HAS_CLASSIC_JERK
-    if (parser.seen('X')) planner.set_max_jerk(X_AXIS, parser.value_linear_units());
-    if (parser.seen('Y')) planner.set_max_jerk(Y_AXIS, parser.value_linear_units());
-    if (parser.seen('Z')) {
+    if (parser.seenval('X')) planner.set_max_jerk(X_AXIS, parser.value_linear_units());
+    if (parser.seenval('Y')) planner.set_max_jerk(Y_AXIS, parser.value_linear_units());
+    if (parser.seenval('Z')) {
       planner.set_max_jerk(Z_AXIS, parser.value_linear_units());
       #if HAS_MESH && DISABLED(LIMITED_JERK_EDITING)
         if (planner.max_jerk.z <= 0.1f)
@@ -185,7 +175,7 @@ void GcodeSuite::M205() {
       #endif
     }
     #if HAS_CLASSIC_E_JERK
-      if (parser.seen('E')) planner.set_max_jerk(E_AXIS, parser.value_linear_units());
+      if (parser.seenval('E')) planner.set_max_jerk(E_AXIS, parser.value_linear_units());
     #endif
   #endif
 }
diff --git a/Marlin/src/gcode/config/M92.cpp b/Marlin/src/gcode/config/M92.cpp
index bdb95db8d..e83f5b314 100644
--- a/Marlin/src/gcode/config/M92.cpp
+++ b/Marlin/src/gcode/config/M92.cpp
@@ -42,7 +42,7 @@ void report_M92(const bool echo=true, const int8_t e=-1) {
     }
   #endif
 
-  UNUSED_E(e);
+  UNUSED(e);
 }
 
 /**
@@ -64,11 +64,8 @@ void GcodeSuite::M92() {
   if (target_extruder < 0) return;
 
   // No arguments? Show M92 report.
-  if (!parser.seen("XYZE"
-    #if ENABLED(MAGIC_NUMBERS_GCODE)
-      "HL"
-    #endif
-  )) return report_M92(true, target_extruder);
+  if (!parser.seen("XYZE" TERN_(MAGIC_NUMBERS_GCODE, "HL")))
+    return report_M92(true, target_extruder);
 
   LOOP_XYZE(i) {
     if (parser.seenval(axis_codes[i])) {
diff --git a/Marlin/src/gcode/control/M17_M18_M84.cpp b/Marlin/src/gcode/control/M17_M18_M84.cpp
index b35b46533..f02508a90 100644
--- a/Marlin/src/gcode/control/M17_M18_M84.cpp
+++ b/Marlin/src/gcode/control/M17_M18_M84.cpp
@@ -34,10 +34,10 @@
  */
 void GcodeSuite::M17() {
   if (parser.seen("XYZE")) {
-    if (parser.seen('X')) ENABLE_AXIS_X();
-    if (parser.seen('Y')) ENABLE_AXIS_Y();
-    if (parser.seen('Z')) ENABLE_AXIS_Z();
-    if (TERN0(HAS_E_STEPPER_ENABLE, parser.seen('E'))) enable_e_steppers();
+    if (parser.seen_test('X')) ENABLE_AXIS_X();
+    if (parser.seen_test('Y')) ENABLE_AXIS_Y();
+    if (parser.seen_test('Z')) ENABLE_AXIS_Z();
+    if (TERN0(HAS_E_STEPPER_ENABLE, parser.seen_test('E'))) enable_e_steppers();
   }
   else {
     LCD_MESSAGEPGM(MSG_NO_MOVE);
@@ -56,10 +56,10 @@ void GcodeSuite::M18_M84() {
   else {
     if (parser.seen("XYZE")) {
       planner.synchronize();
-      if (parser.seen('X')) DISABLE_AXIS_X();
-      if (parser.seen('Y')) DISABLE_AXIS_Y();
-      if (parser.seen('Z')) DISABLE_AXIS_Z();
-      if (TERN0(HAS_E_STEPPER_ENABLE, parser.seen('E'))) disable_e_steppers();
+      if (parser.seen_test('X')) DISABLE_AXIS_X();
+      if (parser.seen_test('Y')) DISABLE_AXIS_Y();
+      if (parser.seen_test('Z')) DISABLE_AXIS_Z();
+      if (TERN0(HAS_E_STEPPER_ENABLE, parser.seen_test('E'))) disable_e_steppers();
     }
     else
       planner.finish_and_disable();
diff --git a/Marlin/src/gcode/control/M211.cpp b/Marlin/src/gcode/control/M211.cpp
index 2049f1eb6..2ba777ba6 100644
--- a/Marlin/src/gcode/control/M211.cpp
+++ b/Marlin/src/gcode/control/M211.cpp
@@ -39,8 +39,8 @@ void GcodeSuite::M211() {
   SERIAL_ECHOPGM(STR_SOFT_ENDSTOPS);
   if (parser.seen('S')) soft_endstop._enabled = parser.value_bool();
   serialprint_onoff(soft_endstop._enabled);
-  print_xyz(l_soft_min, PSTR(STR_SOFT_MIN), PSTR(" "));
-  print_xyz(l_soft_max, PSTR(STR_SOFT_MAX));
+  print_pos(l_soft_min, PSTR(STR_SOFT_MIN), PSTR(" "));
+  print_pos(l_soft_max, PSTR(STR_SOFT_MAX));
 }
 
 #endif
diff --git a/Marlin/src/gcode/feature/trinamic/M911-M914.cpp b/Marlin/src/gcode/feature/trinamic/M911-M914.cpp
index 8c840db5b..0c5fff702 100644
--- a/Marlin/src/gcode/feature/trinamic/M911-M914.cpp
+++ b/Marlin/src/gcode/feature/trinamic/M911-M914.cpp
@@ -35,10 +35,19 @@
   #define M91x_USE(ST) (AXIS_DRIVER_TYPE(ST, TMC2130) || AXIS_DRIVER_TYPE(ST, TMC2160) || AXIS_DRIVER_TYPE(ST, TMC2208) || AXIS_DRIVER_TYPE(ST, TMC2209) || AXIS_DRIVER_TYPE(ST, TMC2660) || AXIS_DRIVER_TYPE(ST, TMC5130) || AXIS_DRIVER_TYPE(ST, TMC5160))
   #define M91x_USE_E(N) (E_STEPPERS > N && M91x_USE(E##N))
 
-  #define M91x_SOME_X (M91x_USE(X) || M91x_USE(X2))
-  #define M91x_SOME_Y (M91x_USE(Y) || M91x_USE(Y2))
-  #define M91x_SOME_Z (M91x_USE(Z) || M91x_USE(Z2) || M91x_USE(Z3) || M91x_USE(Z4))
-  #define M91x_SOME_E (M91x_USE_E(0) || M91x_USE_E(1) || M91x_USE_E(2) || M91x_USE_E(3) || M91x_USE_E(4) || M91x_USE_E(5) || M91x_USE_E(6) || M91x_USE_E(7))
+  #if M91x_USE(X) || M91x_USE(X2)
+    #define M91x_SOME_X 1
+  #endif
+  #if M91x_USE(Y) || M91x_USE(Y2)
+    #define M91x_SOME_Y 1
+  #endif
+  #if M91x_USE(Z) || M91x_USE(Z2) || M91x_USE(Z3) || M91x_USE(Z4)
+    #define M91x_SOME_Z 1
+  #endif
+
+  #if M91x_USE_E(0) || M91x_USE_E(1) || M91x_USE_E(2) || M91x_USE_E(3) || M91x_USE_E(4) || M91x_USE_E(5) || M91x_USE_E(6) || M91x_USE_E(7)
+    #define M91x_SOME_E 1
+  #endif
 
   #if !M91x_SOME_X && !M91x_SOME_Y && !M91x_SOME_Z && !M91x_SOME_E
     #error "MONITOR_DRIVER_STATUS requires at least one TMC2130, 2160, 2208, 2209, 2660, 5130, or 5160."
@@ -112,31 +121,12 @@
    *       M912 E1  ; clear E1 only
    */
   void GcodeSuite::M912() {
-    #if M91x_SOME_X
-      const bool hasX = parser.seen(axis_codes.x);
-    #else
-      constexpr bool hasX = false;
-    #endif
+    const bool hasX = TERN0(M91x_SOME_X, parser.seen(axis_codes.x)),
+               hasY = TERN0(M91x_SOME_Y, parser.seen(axis_codes.y)),
+               hasZ = TERN0(M91x_SOME_Z, parser.seen(axis_codes.z)),
+               hasE = TERN0(M91x_SOME_E, parser.seen(axis_codes.e));
 
-    #if M91x_SOME_Y
-      const bool hasY = parser.seen(axis_codes.y);
-    #else
-      constexpr bool hasY = false;
-    #endif
-
-    #if M91x_SOME_Z
-      const bool hasZ = parser.seen(axis_codes.z);
-    #else
-      constexpr bool hasZ = false;
-    #endif
-
-    #if M91x_SOME_E
-      const bool hasE = parser.seen(axis_codes.e);
-    #else
-      constexpr bool hasE = false;
-    #endif
-
-    const bool hasNone = !hasX && !hasY && !hasZ && !hasE;
+    const bool hasNone = !hasE && !hasX && !hasY && !hasZ;
 
     #if M91x_SOME_X
       const int8_t xval = int8_t(parser.byteval(axis_codes.x, 0xFF));
diff --git a/Marlin/src/gcode/gcode.cpp b/Marlin/src/gcode/gcode.cpp
index 0ca6c82c2..34a719c46 100644
--- a/Marlin/src/gcode/gcode.cpp
+++ b/Marlin/src/gcode/gcode.cpp
@@ -140,7 +140,7 @@ int8_t GcodeSuite::get_target_e_stepper_from_command() {
  *  - Set the feedrate, if included
  */
 void GcodeSuite::get_destination_from_command() {
-  xyze_bool_t seen = { false, false, false, false };
+  xyze_bool_t seen{false};
 
   #if ENABLED(CANCEL_OBJECTS)
     const bool &skip_move = cancelable.skipping;
diff --git a/Marlin/src/gcode/host/M114.cpp b/Marlin/src/gcode/host/M114.cpp
index e5dc90fb3..27b193851 100644
--- a/Marlin/src/gcode/host/M114.cpp
+++ b/Marlin/src/gcode/host/M114.cpp
@@ -34,7 +34,7 @@
     #include "../../core/debug_out.h"
   #endif
 
-  void report_xyze(const xyze_pos_t &pos, const uint8_t n=XYZE, const uint8_t precision=3) {
+  void report_all_axis_pos(const xyze_pos_t &pos, const uint8_t n=XYZE, const uint8_t precision=3) {
     char str[12];
     LOOP_L_N(a, n) {
       SERIAL_CHAR(' ', axis_codes[a], ':');
@@ -43,9 +43,9 @@
     }
     SERIAL_EOL();
   }
-  inline void report_xyz(const xyze_pos_t &pos) { report_xyze(pos, XYZ); }
+  inline void report_linear_axis_pos(const xyze_pos_t &pos) { report_all_axis_pos(pos, XYZ); }
 
-  void report_xyz(const xyz_pos_t &pos, const uint8_t precision=3) {
+  void report_linear_axis_pos(const xyz_pos_t &pos, const uint8_t precision=3) {
     char str[12];
     LOOP_XYZ(a) {
       SERIAL_CHAR(' ', XYZ_CHAR(a), ':');
@@ -57,11 +57,11 @@
   void report_current_position_detail() {
     // Position as sent by G-code
     SERIAL_ECHOPGM("\nLogical:");
-    report_xyz(current_position.asLogical());
+    report_linear_axis_pos(current_position.asLogical());
 
     // Cartesian position in native machine space
     SERIAL_ECHOPGM("Raw:    ");
-    report_xyz(current_position);
+    report_linear_axis_pos(current_position);
 
     xyze_pos_t leveled = current_position;
 
@@ -69,20 +69,20 @@
       // Current position with leveling applied
       SERIAL_ECHOPGM("Leveled:");
       planner.apply_leveling(leveled);
-      report_xyz(leveled);
+      report_linear_axis_pos(leveled);
 
       // Test planner un-leveling. This should match the Raw result.
       SERIAL_ECHOPGM("UnLevel:");
       xyze_pos_t unleveled = leveled;
       planner.unapply_leveling(unleveled);
-      report_xyz(unleveled);
+      report_linear_axis_pos(unleveled);
     #endif
 
     #if IS_KINEMATIC
       // Kinematics applied to the leveled position
       SERIAL_ECHOPGM(TERN(IS_SCARA, "ScaraK: ", "DeltaK: "));
       inverse_kinematics(leveled);  // writes delta[]
-      report_xyz(delta);
+      report_linear_axis_pos(delta);
     #endif
 
     planner.synchronize();
@@ -165,17 +165,17 @@
         planner.get_axis_position_degrees(B_AXIS)
       };
       SERIAL_ECHOPGM("Degrees:");
-      report_xyze(deg, 2);
+      report_all_axis_pos(deg, 2);
     #endif
 
     SERIAL_ECHOPGM("FromStp:");
     get_cartesian_from_steppers();  // writes 'cartes' (with forward kinematics)
     xyze_pos_t from_steppers = { cartes.x, cartes.y, cartes.z, planner.get_axis_position_mm(E_AXIS) };
-    report_xyze(from_steppers);
+    report_all_axis_pos(from_steppers);
 
     const xyze_float_t diff = from_steppers - leveled;
     SERIAL_ECHOPGM("Diff:   ");
-    report_xyze(diff);
+    report_all_axis_pos(diff);
 
     TERN_(FULL_REPORT_TO_HOST_FEATURE, report_current_grblstate_moving());
   }
diff --git a/Marlin/src/gcode/motion/G0_G1.cpp b/Marlin/src/gcode/motion/G0_G1.cpp
index 089e00ab9..73c5b1171 100644
--- a/Marlin/src/gcode/motion/G0_G1.cpp
+++ b/Marlin/src/gcode/motion/G0_G1.cpp
@@ -83,7 +83,7 @@ void GcodeSuite::G0_G1(TERN_(HAS_FAST_MOVES, const bool fast_move/*=false*/)) {
 
       if (MIN_AUTORETRACT <= MAX_AUTORETRACT) {
         // When M209 Autoretract is enabled, convert E-only moves to firmware retract/recover moves
-        if (fwretract.autoretract_enabled && parser.seen('E') && !(parser.seen('X') || parser.seen('Y') || parser.seen('Z'))) {
+        if (fwretract.autoretract_enabled && parser.seen('E') && !parser.seen("XYZ")) {
           const float echange = destination.e - current_position.e;
           // Is this a retract or recover move?
           if (WITHIN(ABS(echange), MIN_AUTORETRACT, MAX_AUTORETRACT) && fwretract.retracted[active_extruder] == (echange > 0.0)) {
diff --git a/Marlin/src/gcode/motion/G2_G3.cpp b/Marlin/src/gcode/motion/G2_G3.cpp
index 5a8324362..41ff7e976 100644
--- a/Marlin/src/gcode/motion/G2_G3.cpp
+++ b/Marlin/src/gcode/motion/G2_G3.cpp
@@ -291,12 +291,12 @@ void plan_arc(
  *    Mixing IJ/JK/KI with R will throw an error.
  *
  *  - R specifies the radius. X or Y (Y or Z / Z or X) is required.
- *    Omitting both XY/YZ/ZX will throw an error.
- *    XY/YZ/ZX must differ from the current XY/YZ/ZX.
- *    Mixing R with IJ/JK/KI will throw an error.
+ *      Omitting both XY/YZ/ZX will throw an error.
+ *      XY/YZ/ZX must differ from the current XY/YZ/ZX.
+ *      Mixing R with IJ/JK/KI will throw an error.
  *
  *  - P specifies the number of full circles to do
- *    before the specified arc move.
+ *      before the specified arc move.
  *
  *  Examples:
  *
diff --git a/Marlin/src/gcode/parser.cpp b/Marlin/src/gcode/parser.cpp
index bfa4346f0..514d6b7a5 100644
--- a/Marlin/src/gcode/parser.cpp
+++ b/Marlin/src/gcode/parser.cpp
@@ -222,7 +222,7 @@ void GCodeParser::parse(char *p) {
 
       #if ENABLED(GCODE_MOTION_MODES)
         if (letter == 'G'
-          && (codenum <= TERN(ARC_SUPPORT, 3, 1) || codenum == 5 || TERN0(G38_PROBE_TARGET, codenum == 38))
+          && (codenum <= TERN(ARC_SUPPORT, 3, 1) || TERN0(BEZIER_CURVE_SUPPORT, codenum == 5) || TERN0(G38_PROBE_TARGET, codenum == 38))
         ) {
           motion_mode_codenum = codenum;
           TERN_(USE_GCODE_SUBCODES, motion_mode_subcode = subcode);
diff --git a/Marlin/src/gcode/parser.h b/Marlin/src/gcode/parser.h
index 3aec17554..4270e04c9 100644
--- a/Marlin/src/gcode/parser.h
+++ b/Marlin/src/gcode/parser.h
@@ -226,7 +226,7 @@ public:
 
   // Seen any axis parameter
   static inline bool seen_axis() {
-    return seen_test('X') || seen_test('Y') || seen_test('Z') || seen_test('E');
+    return seen("XYZE");
   }
 
   #if ENABLED(GCODE_QUOTED_STRINGS)
diff --git a/Marlin/src/inc/Conditionals_post.h b/Marlin/src/inc/Conditionals_post.h
index 6de9c40ac..46c1e5902 100644
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@@ -125,7 +125,7 @@
   #if EITHER(IS_CORE, MARKFORGED_XY)
     #define CAN_CALIBRATE(A,B) (_AXIS(A) == B)
   #else
-    #define CAN_CALIBRATE(A,B) 1
+    #define CAN_CALIBRATE(A,B) true
   #endif
 #endif
 #define AXIS_CAN_CALIBRATE(A) CAN_CALIBRATE(A,NORMAL_AXIS)
diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index 2131fcd67..1f0b301f0 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -3247,7 +3247,7 @@ static_assert(   _ARR_TEST(3,0) && _ARR_TEST(3,1) && _ARR_TEST(3,2)
 /**
  * Sanity check for MIXING_EXTRUDER & DISTINCT_E_FACTORS these are not compatible
  */
-#if ENABLED(MIXING_EXTRUDER) && ENABLED(DISTINCT_E_FACTORS)
+#if BOTH(MIXING_EXTRUDER, DISTINCT_E_FACTORS)
   #error "MIXING_EXTRUDER can't be used with DISTINCT_E_FACTORS. But you may use SINGLENOZZLE with DISTINCT_E_FACTORS."
 #endif
 
diff --git a/Marlin/src/lcd/extui/dgus/dgus_extui.cpp b/Marlin/src/lcd/extui/dgus/dgus_extui.cpp
index b38929417..55546caaf 100644
--- a/Marlin/src/lcd/extui/dgus/dgus_extui.cpp
+++ b/Marlin/src/lcd/extui/dgus/dgus_extui.cpp
@@ -147,6 +147,7 @@ namespace ExtUI {
         case PID_DONE:
           ScreenHandler.setstatusmessagePGM(GET_TEXT(MSG_PID_AUTOTUNE_DONE));
           break;
+        case PID_STARTED: break;
       }
       ScreenHandler.GotoScreen(DGUSLCD_SCREEN_MAIN);
     }
diff --git a/Marlin/src/lcd/extui/ui_api.cpp b/Marlin/src/lcd/extui/ui_api.cpp
index faa23665b..fff31f099 100644
--- a/Marlin/src/lcd/extui/ui_api.cpp
+++ b/Marlin/src/lcd/extui/ui_api.cpp
@@ -569,7 +569,7 @@ namespace ExtUI {
   }
 
   float getAxisSteps_per_mm(const extruder_t extruder) {
-    UNUSED_E(extruder);
+    UNUSED(extruder);
     return planner.settings.axis_steps_per_mm[E_AXIS_N(extruder - E0)];
   }
 
@@ -579,7 +579,7 @@ namespace ExtUI {
   }
 
   void setAxisSteps_per_mm(const_float_t value, const extruder_t extruder) {
-    UNUSED_E(extruder);
+    UNUSED(extruder);
     planner.settings.axis_steps_per_mm[E_AXIS_N(extruder - E0)] = value;
     planner.refresh_positioning();
   }
@@ -589,7 +589,7 @@ namespace ExtUI {
   }
 
   feedRate_t getAxisMaxFeedrate_mm_s(const extruder_t extruder) {
-    UNUSED_E(extruder);
+    UNUSED(extruder);
     return planner.settings.max_feedrate_mm_s[E_AXIS_N(extruder - E0)];
   }
 
@@ -598,7 +598,7 @@ namespace ExtUI {
   }
 
   void setAxisMaxFeedrate_mm_s(const feedRate_t value, const extruder_t extruder) {
-    UNUSED_E(extruder);
+    UNUSED(extruder);
     planner.set_max_feedrate(E_AXIS_N(extruder - E0), value);
   }
 
@@ -607,7 +607,7 @@ namespace ExtUI {
   }
 
   float getAxisMaxAcceleration_mm_s2(const extruder_t extruder) {
-    UNUSED_E(extruder);
+    UNUSED(extruder);
     return planner.settings.max_acceleration_mm_per_s2[E_AXIS_N(extruder - E0)];
   }
 
@@ -616,7 +616,7 @@ namespace ExtUI {
   }
 
   void setAxisMaxAcceleration_mm_s2(const_float_t value, const extruder_t extruder) {
-    UNUSED_E(extruder);
+    UNUSED(extruder);
     planner.set_max_acceleration(E_AXIS_N(extruder - E0), value);
   }
 
diff --git a/Marlin/src/lcd/menu/menu_mmu2.cpp b/Marlin/src/lcd/menu/menu_mmu2.cpp
index af3d9232b..425a8ca75 100644
--- a/Marlin/src/lcd/menu/menu_mmu2.cpp
+++ b/Marlin/src/lcd/menu/menu_mmu2.cpp
@@ -37,8 +37,7 @@ inline void action_mmu2_load_filament_to_nozzle(const uint8_t tool) {
   ui.reset_status();
   ui.return_to_status();
   ui.status_printf_P(0,  GET_TEXT(MSG_MMU2_LOADING_FILAMENT), int(tool + 1));
-  if (mmu2.load_filament_to_nozzle(tool))
-    ui.reset_status();
+  if (mmu2.load_filament_to_nozzle(tool)) ui.reset_status();
   ui.return_to_status();
 }
 
diff --git a/Marlin/src/module/endstops.cpp b/Marlin/src/module/endstops.cpp
index d7f728ad4..2ac20c92e 100644
--- a/Marlin/src/module/endstops.cpp
+++ b/Marlin/src/module/endstops.cpp
@@ -508,7 +508,7 @@ void Endstops::update() {
   #define UPDATE_ENDSTOP_BIT(AXIS, MINMAX) SET_BIT_TO(live_state, _ENDSTOP(AXIS, MINMAX), (READ(_ENDSTOP_PIN(AXIS, MINMAX)) != _ENDSTOP_INVERTING(AXIS, MINMAX)))
   #define COPY_LIVE_STATE(SRC_BIT, DST_BIT) SET_BIT_TO(live_state, DST_BIT, TEST(live_state, SRC_BIT))
 
-  #if ENABLED(G38_PROBE_TARGET) && PIN_EXISTS(Z_MIN_PROBE) && NONE(CORE_IS_XY, CORE_IS_XZ, MARKFORGED_XY)
+  #if BOTH(G38_PROBE_TARGET, HAS_Z_MIN_PROBE_PIN) && NONE(CORE_IS_XY, CORE_IS_XZ, MARKFORGED_XY)
     // If G38 command is active check Z_MIN_PROBE for ALL movement
     if (G38_move) UPDATE_ENDSTOP_BIT(Z, MIN_PROBE);
   #endif
@@ -747,7 +747,7 @@ void Endstops::update() {
     #define PROCESS_ENDSTOP_Z(MINMAX) PROCESS_DUAL_ENDSTOP(Z, MINMAX)
   #endif
 
-  #if ENABLED(G38_PROBE_TARGET) && PIN_EXISTS(Z_MIN_PROBE) && NONE(CORE_IS_XY, CORE_IS_XZ, MARKFORGED_XY)
+  #if BOTH(G38_PROBE_TARGET, HAS_Z_MIN_PROBE_PIN) && NONE(CORE_IS_XY, CORE_IS_XZ, MARKFORGED_XY)
     #if ENABLED(G38_PROBE_AWAY)
       #define _G38_OPEN_STATE (G38_move >= 4)
     #else
diff --git a/Marlin/src/module/motion.cpp b/Marlin/src/module/motion.cpp
index 171d9520c..97be6226b 100644
--- a/Marlin/src/module/motion.cpp
+++ b/Marlin/src/module/motion.cpp
@@ -83,13 +83,13 @@ bool relative_mode; // = false;
  *   Used by 'line_to_current_position' to do a move after changing it.
  *   Used by 'sync_plan_position' to update 'planner.position'.
  */
-xyze_pos_t current_position = { X_HOME_POS, Y_HOME_POS,
-  #ifdef Z_IDLE_HEIGHT
-    Z_IDLE_HEIGHT
-  #else
-    Z_HOME_POS
-  #endif
-};
+#ifdef Z_IDLE_HEIGHT
+  #define Z_INIT_POS Z_IDLE_HEIGHT
+#else
+  #define Z_INIT_POS Z_HOME_POS
+#endif
+
+xyze_pos_t current_position = { X_HOME_POS, Y_HOME_POS, Z_INIT_POS };
 
 /**
  * Cartesian Destination
@@ -204,11 +204,7 @@ void report_real_position() {
   get_cartesian_from_steppers();
   xyze_pos_t npos = cartes;
   npos.e = planner.get_axis_position_mm(E_AXIS);
-
-  #if HAS_POSITION_MODIFIERS
-    planner.unapply_modifiers(npos, true);
-  #endif
-
+  TERN_(HAS_POSITION_MODIFIERS, planner.unapply_modifiers(npos, true));
   report_logical_position(npos);
   report_more_positions();
 }
diff --git a/Marlin/src/module/settings.cpp b/Marlin/src/module/settings.cpp
index 2b20bba4f..0ef382a71 100644
--- a/Marlin/src/module/settings.cpp
+++ b/Marlin/src/module/settings.cpp
@@ -2584,8 +2584,8 @@ void MarlinSettings::postprocess() {
 void MarlinSettings::reset() {
   LOOP_XYZE_N(i) {
     planner.settings.max_acceleration_mm_per_s2[i] = pgm_read_dword(&_DMA[ALIM(i, _DMA)]);
-    planner.settings.axis_steps_per_mm[i]          = pgm_read_float(&_DASU[ALIM(i, _DASU)]);
-    planner.settings.max_feedrate_mm_s[i]          = pgm_read_float(&_DMF[ALIM(i, _DMF)]);
+    planner.settings.axis_steps_per_mm[i] = pgm_read_float(&_DASU[ALIM(i, _DASU)]);
+    planner.settings.max_feedrate_mm_s[i] = pgm_read_float(&_DMF[ALIM(i, _DMF)]);
   }
 
   planner.settings.min_segment_time_us = DEFAULT_MINSEGMENTTIME;
diff --git a/Marlin/src/module/stepper/trinamic.cpp b/Marlin/src/module/stepper/trinamic.cpp
index de3d45e4b..8c943048b 100644
--- a/Marlin/src/module/stepper/trinamic.cpp
+++ b/Marlin/src/module/stepper/trinamic.cpp
@@ -62,7 +62,7 @@ enum StealthIndex : uint8_t { STEALTH_AXIS_XY, STEALTH_AXIS_Z, STEALTH_AXIS_E };
 #define _TMC_UART_DEFINE(SWHW, IC, ST, AI) TMC_UART_##SWHW##_DEFINE(IC, ST, TMC_##ST##_LABEL, AI)
 #define TMC_UART_DEFINE(SWHW, ST, AI) _TMC_UART_DEFINE(SWHW, ST##_DRIVER_TYPE, ST, AI##_AXIS)
 
-#if DISTINCT_E > 1
+#if ENABLED(DISTINCT_E_FACTORS)
   #define TMC_SPI_DEFINE_E(AI) TMC_SPI_DEFINE(E##AI, E##AI)
   #define TMC_UART_DEFINE_E(SWHW, AI) TMC_UART_DEFINE(SWHW, E##AI, E##AI)
 #else