diff --git a/Documentation/GCodes.md b/Documentation/GCodes.md
index 9ad2a336a4e19623fcd6e9effcd87c25db3b5dae..253fb7fc810a5872fbb0650ecfc563e8893da0b1 100644
--- a/Documentation/GCodes.md
+++ b/Documentation/GCodes.md
@@ -6,7 +6,7 @@
 *  G1  - Coordinated Movement X Y Z E
 *  G2  - CW ARC
 *  G3  - CCW ARC
-*  G4  - Dwell S<seconds> or P<milliseconds>
+*  G4  - Dwell S[seconds] or P[milliseconds]
 *  G10 - retract filament according to settings of M207
 *  G11 - retract recover filament according to settings of M208
 *  G28 - Home all Axis
@@ -41,8 +41,8 @@
 *  M81  - Turn off Power Supply
 *  M82  - Set E codes absolute (default)
 *  M83  - Set E codes relative while in Absolute Coordinates (G90) mode
-*  M84  - Disable steppers until next move, or use S<seconds> to specify an inactivity timeout, after which the steppers will be disabled.  S0 to disable the timeout.
-*  M85  - Set inactivity shutdown timer with parameter S<seconds>. To disable set zero (default)
+*  M84  - Disable steppers until next move, or use S[seconds] to specify an inactivity timeout, after which the steppers will be disabled.  S0 to disable the timeout.
+*  M85  - Set inactivity shutdown timer with parameter S[seconds]. To disable set zero (default)
 *  M92  - Set axis_steps_per_unit - same syntax as G92
 *  M104 - Set extruder target temp
 *  M105 - Read current temp
@@ -62,32 +62,32 @@
 *  M140 - Set bed target temp
 *  M190 - Sxxx Wait for bed current temp to reach target temp. Waits only when heating
 *         Rxxx Wait for bed current temp to reach target temp. Waits when heating and cooling
-*  M200 D<millimeters>- set filament diameter and set E axis units to cubic millimeters (use S0 to set back to millimeters).
+*  M200 - D[millimeters]- set filament diameter and set E axis units to cubic millimeters (use S0 to set back to millimeters).
 *  M201 - Set max acceleration in units/s^2 for print moves (M201 X1000 Y1000)
 *  M202 - Set max acceleration in units/s^2 for travel moves (M202 X1000 Y1000) Unused in Marlin!!
 *  M203 - Set maximum feedrate that your machine can sustain (M203 X200 Y200 Z300 E10000) in mm/sec
 *  M204 - Set default acceleration: S normal moves T filament only moves (M204 S3000 T7000) im mm/sec^2  also sets minimum segment time in ms (B20000) to prevent buffer underruns and M20 minimum feedrate
-*  M205 -  advanced settings:  minimum travel speed S=while printing T=travel only,  B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk, E=maximum E jerk
+*  M205 - advanced settings:  minimum travel speed S=while printing T=travel only,  B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk, E=maximum E jerk
 *  M206 - set additional homing offset
 *  M207 - set retract length S[positive mm] F[feedrate mm/min] Z[additional zlift/hop], stays in mm regardless of M200 setting
 *  M208 - set recover=unretract length S[positive mm surplus to the M207 S*] F[feedrate mm/min]
-*  M209 - S<1=true/0=false> enable automatic retract detect if the slicer did not support G10/11: every normal extrude-only move will be classified as retract depending on the direction.
-*  M218 - set hotend offset (in mm): T<extruder_number> X<offset_on_X> Y<offset_on_Y>
+*  M209 - S[1=true/0=false] enable automatic retract detect if the slicer did not support G10/11: every normal extrude-only move will be classified as retract depending on the direction.
+*  M218 - set hotend offset (in mm): T[extruder_number] X[offset_on_X] Y[offset_on_Y]
 *  M220 - S[factor in percent] - set speed factor override percentage
 *  M221 - S[factor in percent] - set extrude factor override percentage
 *  M240 - Trigger a camera to take a photograph
-*  M280 - Position an RC Servo P<index> S<angle/microseconds>, ommit S to report back current angle
-*  M300 - Play beep sound S<frequency Hz> P<duration ms>
+*  M280 - Position an RC Servo P[index] S[angle/microseconds], ommit S to report back current angle
+*  M300 - Play beep sound S[frequency Hz] P[duration ms]
 *  M301 - Set PID parameters P I and D
 *  M302 - Allow cold extrudes
-*  M303 - PID relay autotune S<temperature> sets the target temperature. (default target temperature = 150C)
+*  M303 - PID relay autotune S[temperature] sets the target temperature. (default target temperature = 150C)
 *  M304 - Set bed PID parameters P I and D
 *  M350 - Set microstepping mode.
 *  M351 - Toggle MS1 MS2 pins directly.
 *  M400 - Finish all moves
 *  M401 - Lower z-probe if present
 *  M402 - Raise z-probe if present
-*  M404 - N<dia in mm> Enter the nominal filament width (3mm, 1.75mm) or will display nominal filament width without parameters
+*  M404 - N[dia in mm] Enter the nominal filament width (3mm, 1.75mm) or will display nominal filament width without parameters
 *  M405 - Turn on Filament Sensor extrusion control.  Optional D[delay in cm] to set delay in centimeters between sensor and extruder
 *  M406 - Turn off Filament Sensor extrusion control
 *  M407 - Displays measured filament diameter