Spacing and spelling

Marlin/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/MarlinSerial.cpp

 #endif // !AT90USB
 
 // For AT90USB targets use the UART for BT interfacing
-#if defined(AT90USB) && defined (BTENABLED)
-   HardwareSerial bt;
+#if defined(AT90USB) && defined(BTENABLED)
+  HardwareSerial bt;
 #endif
-

Marlin/MarlinSerial.h

 #endif // !AT90USB
 
 // Use the UART for BT in AT90USB configurations
-#if defined(AT90USB) && defined (BTENABLED)
-   extern HardwareSerial bt;
+#if defined(AT90USB) && defined(BTENABLED)
+  extern HardwareSerial bt;
 #endif
 
 #endif

Marlin/Marlin_main.cpp

 
 #if defined(ENABLE_AUTO_BED_LEVELING) && defined(Z_PROBE_REPEATABILITY_TEST)
 
-  // This is redudant since the SanityCheck.h already checks for a valid Z_PROBE_PIN, but here for clarity.
+  // This is redundant since the SanityCheck.h already checks for a valid Z_PROBE_PIN, but here for clarity.
   #ifdef Z_PROBE_ENDSTOP
     #if !HAS_Z_PROBE
-      #error "You must have a Z_PROBE_PIN defined in order to enable calculation of Z-Probe repeatability."
+      #error You must define Z_PROBE_PIN to enable Z-Probe repeatability calculation.
     #endif
   #elif !HAS_Z_MIN
-    #error "You must have a Z_MIN_PIN defined in order to enable calculation of Z-Probe repeatability."
+    #error You must define Z_MIN_PIN to enable Z-Probe repeatability calculation.
   #endif
 
   /**

Marlin/SanityCheck.h

      * Require a Z Min pin
      */
     #if Z_MIN_PIN == -1
-      #if Z_PROBE_PIN == -1 || (! defined (Z_PROBE_ENDSTOP) || defined (DISABLE_Z_PROBE_ENDSTOP)) // It's possible for someone to set a pin for the Z Probe, but not enable it.
+      #if Z_PROBE_PIN == -1 || (!defined(Z_PROBE_ENDSTOP) || defined(DISABLE_Z_PROBE_ENDSTOP)) // It's possible for someone to set a pin for the Z Probe, but not enable it.
         #ifdef Z_PROBE_REPEATABILITY_TEST
           #error You must have a Z_MIN or Z_PROBE endstop to enable Z_PROBE_REPEATABILITY_TEST.
         #else

Marlin/Servo.h

     int read();                        // returns current pulse width as an angle between 0 and 180 degrees
     int readMicroseconds();            // returns current pulse width in microseconds for this servo (was read_us() in first release)
     bool attached();                   // return true if this servo is attached, otherwise false
-    #if defined (ENABLE_AUTO_BED_LEVELING) && (PROBE_SERVO_DEACTIVATION_DELAY > 0)
+    #if defined(ENABLE_AUTO_BED_LEVELING) && PROBE_SERVO_DEACTIVATION_DELAY > 0
       int pin;                           // store the hardware pin of the servo
     #endif
   private:

Marlin/configurator/config/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/Felix/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/Felix/Configuration_DUAL.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/Hephestos/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/K8200/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/SCARA/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/WITBOX/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/delta/generic/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/delta/kossel_mini/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/makibox/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/example_configurations/tvrrug/Round2/Configuration.h

   // If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
   // If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
   // WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
-  // To use a separte Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
+  // To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
   // If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
   // RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
   // for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.

Marlin/fastio.h

 	added as necessary or if I feel like it- not a comprehensive list!
 */
 
-#if defined (__AVR_ATmega168__) || defined (__AVR_ATmega328__) || defined (__AVR_ATmega328P__)
+#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega328__) || defined(__AVR_ATmega328P__)
 // UART
 #define	RXD					DIO0
 #define	TXD					DIO1
 #define PD7_PWM			NULL
 #endif	/*	_AVR_ATmega{168,328,328P}__ */
 
-#if defined (__AVR_ATmega644__) || defined (__AVR_ATmega644P__) || defined (__AVR_ATmega644PA__) || defined (__AVR_ATmega1284P__)
+#if defined(__AVR_ATmega644__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644PA__) || defined(__AVR_ATmega1284P__)
 // UART
 #define	RXD					DIO8
 #define	TXD					DIO9
 #define PD7_PWM			OCR2A
 #endif	/*	_AVR_ATmega{644,644P,644PA}__ */
 
-#if defined (__AVR_ATmega1280__) || defined (__AVR_ATmega2560__)
+#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
 // UART
 #define	RXD					DIO0
 #define	TXD					DIO1
 
 #endif
 
-#if defined (__AVR_AT90USB1287__) || defined (__AVR_AT90USB1286__) || defined (__AVR_AT90USB646__) || defined(__AVR_AT90USB647__)
+#if defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__)
 // SPI
 #define	SCK					DIO9
 #define	MISO				DIO11
 #endif // __AVR_AT90usbxxx__
 
 
-#if defined (__AVR_ATmega1281__) || defined (__AVR_ATmega2561__)
+#if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
 // UART
 #define	RXD					DIO0
 #define	TXD					DIO1

Marlin/pins.h

   #define Z_MIN_PIN          -1
 #endif
 
-#if defined (DISABLE_Z_PROBE_ENDSTOP) || ! defined (Z_PROBE_ENDSTOP) // Allow code to compile regardless of Z_PROBE_ENDSTOP setting.
+#if defined(DISABLE_Z_PROBE_ENDSTOP) || !defined(Z_PROBE_ENDSTOP) // Allow code to compile regardless of Z_PROBE_ENDSTOP setting.
   #define Z_PROBE_PIN        -1
 #endif
 
   #define Z_MIN_PIN          -1
 #endif
 
-#define SENSITIVE_PINS { 0, 1, X_STEP_PIN, X_DIR_PIN, X_ENABLE_PIN, X_MIN_PIN, X_MAX_PIN, Y_STEP_PIN, Y_DIR_PIN, Y_ENABLE_PIN, Y_MIN_PIN, Y_MAX_PIN, Z_STEP_PIN, Z_DIR_PIN, Z_ENABLE_PIN, Z_MIN_PIN, Z_MAX_PIN, Z_PROBE_PIN, PS_ON_PIN, \
-                        HEATER_BED_PIN, FAN_PIN, \
+#define SENSITIVE_PINS { 0, 1,
+                        X_STEP_PIN, X_DIR_PIN, X_ENABLE_PIN, X_MIN_PIN, X_MAX_PIN, \
+                        Y_STEP_PIN, Y_DIR_PIN, Y_ENABLE_PIN, Y_MIN_PIN, Y_MAX_PIN, \
+                        Z_STEP_PIN, Z_DIR_PIN, Z_ENABLE_PIN, Z_MIN_PIN, Z_MAX_PIN, Z_PROBE_PIN, \
+                        PS_ON_PIN, HEATER_BED_PIN, FAN_PIN, \
                         _E0_PINS _E1_PINS _E2_PINS _E3_PINS \
                         analogInputToDigitalPin(TEMP_BED_PIN) \
                        }

Marlin/pins_RAMPS_13.h

   #define FILWIDTH_PIN        5
 #endif
 
-#if defined(Z_PROBE_ENDSTOP)
+#ifdef Z_PROBE_ENDSTOP
   // Define a pin to use as the signal pin on Arduino for the Z_PROBE endstop.
- #define Z_PROBE_PIN 32
+  #define Z_PROBE_PIN 32
 #endif
 
-#if defined(FILAMENT_RUNOUT_SENSOR)
+#ifdef FILAMENT_RUNOUT_SENSOR
   // define digital pin 4 for the filament runout sensor. Use the RAMPS 1.4 digital input 4 on the servos connector
   #define FILRUNOUT_PIN        4
 #endif