diff --git a/docs/SUMMARY.md b/docs/SUMMARY.md
index aedfc39f..72bda684 100644
--- a/docs/SUMMARY.md
+++ b/docs/SUMMARY.md
@@ -54,3 +54,17 @@
         * [pause until](/reference/brick/button/pause-until)
         * [set light](/reference/brick/set-light)
         * [battery level](/reference/brick/battery-level)
+    * [Motors](/reference/motors)
+        * [set speed](/reference/motors/motor/set-speed)
+        * [stop](/reference/motors/motor/stop)
+        * [reset](/reference/motors/motor/reset)
+        * [set brake](/reference/motors/motor/set-brake)
+        * [set reversed](/reference/motors/motor/set-reversed)
+        * [set regulated](/reference/motors/motor/set-regulated)
+        * [tank](/reference/motors/synced/tank)
+        * [steer](/reference/motors/synced/steer)
+        * [tacho](/reference/motors/motor/tacho)
+        * [angle](/reference/motors/motor/angle)
+        * [speed](/reference/motors/motor/speed)
+        * [clear counts](/reference/motors/motor/clear-counts)
+        * [stop all motors](/reference/motors/stop-all-motors)
diff --git a/docs/reference.md b/docs/reference.md
index 223f223f..4dc24f46 100644
--- a/docs/reference.md
+++ b/docs/reference.md
@@ -2,10 +2,12 @@
 
 ```namespaces
 brick.showMood(moods.sleeping);
+motors.stopAllMotors()
 ```
 
 ## See Also
 
 [brick](/reference/brick),
+[motors](/reference/motors),
 [touch sensor](/reference/sensors/touch-sensor),
 [color sensor](/reference/sensors/color-sensor)
\ No newline at end of file
diff --git a/docs/reference/motors.md b/docs/reference/motors.md
new file mode 100644
index 00000000..9883aaa3
--- /dev/null
+++ b/docs/reference/motors.md
@@ -0,0 +1,24 @@
+# Motors
+
+## Motion
+
+```cards
+motors.largeA.setSpeed(50)
+motors.largeAB.tank(50, 50)
+motors.largeAB.steer(0, 50)
+motors.largeA.pauseUntilReady()
+motors.largeA.setBrake(false)
+motors.largeA.setReversed(false)
+motors.largeA.setRegulated(false)
+motors.largeA.stop()
+motors.largeA.reset()
+motors.stopAllMotors()
+```
+## Counters
+
+```cards
+motors.largeA.speed()
+motors.largeA.angle()
+motors.largeA.tacho()
+motors.largeA.clearCounts()
+```
\ No newline at end of file
diff --git a/docs/reference/motors/motor/angle.md b/docs/reference/motors/motor/angle.md
new file mode 100644
index 00000000..dc426fe0
--- /dev/null
+++ b/docs/reference/motors/motor/angle.md
@@ -0,0 +1,31 @@
+# angle
+
+Get the current angle of the motor's rotation in degrees.
+
+```sig
+motors.largeA.angle()
+```
+
+When a motor is started for the first time, or after a reset, it's angle of rotation starts at `0` degrees. A complete rotation (a turn in a full circle) is `360` degrees. At `360` degrees, the motor angle gets set back to `0`. So, one and a half turns adds up to `540` degrees of total rotation but the motor only cares about the current angle from `0` degrees which is `180` degrees.
+
+## Returns
+
+* a [number](/types/number) which is the current angle of rotation for the motor. The value returned is the number of degrees from `0` to `359`.
+
+## Example
+
+Reset the motor connected to port **A** and run it for for 2 seconds at a speed of `45`. Stop and get the current angle of rotation.
+
+```blocks
+let motorAngle = 0;
+motors.largeA.reset()
+motors.largeA.setSpeed(45)
+loops.pause(2000)
+motors.largeA.stop()
+motorAngle = motors.largeA.angle()
+```
+
+## See also
+
+[tacho](/reference/motors/motor/tacho), [speed](/reference/motors/motor/speed),
+[reset](/reference/motors/motor/reset), [clear counts](/reference/motors/motor/clear-counts)
\ No newline at end of file
diff --git a/docs/reference/motors/motor/clear-counts.md b/docs/reference/motors/motor/clear-counts.md
new file mode 100644
index 00000000..36c36573
--- /dev/null
+++ b/docs/reference/motors/motor/clear-counts.md
@@ -0,0 +1,35 @@
+# clear Counts
+
+Set all counters for the motor back to zero.
+
+```sig
+motors.largeA.clearCounts()
+```
+
+The counters for a motor are: **tacho**, **angle**, and **speed**. Each of these counters is set to start counting from `0` again. This is a way to begin new counts without having to reset the motor.
+
+## Example
+
+See if the motor turns the same number of times for each of two count periods. Run the motor connected to port **A** twice for 10 seconds and compare the tacho counts.
+
+```blocks
+let tachoCount = 0;
+motors.largeA.reset()
+motors.largeA.setSpeed(50)
+loops.pause(10000)
+tachoCount = motors.largeA.tacho()
+motors.largeA.clearCounts()
+motors.largeA.setSpeed(50)
+loops.pause(10000)
+if (tachoCount == motors.largeA.tacho()) {
+    brick.showString("Motor turns equal.", 1)
+} else {
+    brick.showString("Motor turns NOT equal.", 1)
+}
+motors.largeA.stop()
+```
+
+## See also
+
+[tacho](/reference/motors/motor/tacho), [angle](/reference/motors/motor/angle),
+[speed](/reference/motors/motor/speed), [reset](/reference/motors/motor/reset)
\ No newline at end of file
diff --git a/docs/reference/motors/motor/reset.md b/docs/reference/motors/motor/reset.md
new file mode 100644
index 00000000..a15a49e9
--- /dev/null
+++ b/docs/reference/motors/motor/reset.md
@@ -0,0 +1,30 @@
+# reset
+
+Reset the motor's speed setting and it's counters.
+
+```sig
+motors.largeA.reset()
+```
+
+The motor's speed is set back to `0` and the **tacho**, **angle**, and **speed** counters are set to `0`.
+
+## Example
+
+See what the angle count is when a motor is stopped. Then, try it again after a reset.
+
+```blocks
+motors.largeA.setSpeed(30)
+loops.pause(2000)
+motors.largeA.stop()
+brick.showString("Angle count:", 1)
+brick.showNumber(motors.largeA.angle(), 2)
+motors.largeA.setSpeed(30)
+loops.pause(2000)
+motors.largeA.reset()
+brick.showString("Angle count:", 4)
+brick.showNumber(motors.largeA.angle(), 5)
+```
+
+## See also
+
+[stop](/reference/motors/motor/stop), [clear counts](/reference/motors/motor/clear-counts)
\ No newline at end of file
diff --git a/docs/reference/motors/motor/set-brake.md b/docs/reference/motors/motor/set-brake.md
new file mode 100644
index 00000000..ab50d334
--- /dev/null
+++ b/docs/reference/motors/motor/set-brake.md
@@ -0,0 +1,30 @@
+# set Brake
+
+Set the brake on the motor so it won't turn when it has no power.
+
+```sig
+motors.largeA.setBrake(false)
+```
+
+When a the motor is stopped, it can still rotate if an external force is applied to it. This can happen, for example, if your're tanking your brick on a inclined surface and stop the motors. Gravity will push down on the brick and might cause it to start rolling again. You can prevent this movement by setting the brake.
+
+Also, you can use the brake to do simple skid steering for your brick.
+
+## Paramters
+
+* **brake**: a [boolean](/types/boolean) value which is either `true` to set the brake on or `false` to set the brake off.
+
+## Example
+
+Run the motor connected to port **A** for 2 seconds at a speed of `30`. Stop and set the brake.
+
+```blocks
+motors.largeA.setSpeed(30)
+loops.pause(2000)
+motors.largeA.stop()
+motors.largeA.setBrake(true)
+```
+
+## See also
+
+[stop](/reference/motors/motor/stop)
\ No newline at end of file
diff --git a/docs/reference/motors/motor/set-regulated.md b/docs/reference/motors/motor/set-regulated.md
new file mode 100644
index 00000000..28dc165a
--- /dev/null
+++ b/docs/reference/motors/motor/set-regulated.md
@@ -0,0 +1,32 @@
+# set Regulated
+
+Tell a motor to regulate its speed or not.
+
+```sig
+motors.largeA.setRegulated(true)
+```
+
+In order for a motor to always rotate at a constant speed it needs regulation. This means that the motor control electronics need to continously measure how much rotation has happened. The controller takes several rotation counts for a small amount of time and compares them to see if the speed is changing. The output power is adjusted if the controller detects that the motor is running too slow or too fast.
+
+If it's not regulated, your motor can change from the speed that you've set for it. Some examples are if your brick is driving forward and bumps into an object or it drives up a slope creating more load on the motor. In theses situations, if your motor speed is regulated, the controller will boost the power to the motor to keep it's speed from slowing down. Another example is when you run the motors to drive your brick down a slope. In this case, the motors would go faster than the speed you set for them if not regulated. To regulate this the controller reduces the power output to the motors to keep the brick from going faster.
+
+Motor regulation is always set to **ON** when your program first starts or the motor is reset.
+
+## Paramters
+
+* **value**: a [boolean](/types/boolean) value which means that the motor speed is regulated if `true`. The motor speed is not regulated when this is `false`.
+
+## Example
+
+Turn off the speed regulation for the motor connected to port **A**.
+
+```blocks
+motors.largeA.setRegulated(false)
+motors.largeA.setSpeed(75)
+loops.pause(20000)
+motors.largeA.stop()
+```
+
+## See also
+
+[set speed](/reference/motors/motor/set-speed), [stop](/reference/motors/motor/stop)
diff --git a/docs/reference/motors/motor/set-reversed.md b/docs/reference/motors/motor/set-reversed.md
new file mode 100644
index 00000000..1ca799f1
--- /dev/null
+++ b/docs/reference/motors/motor/set-reversed.md
@@ -0,0 +1,32 @@
+# set Reversed
+
+Change the direction of rotation for a motor.
+
+```sig
+motors.largeA.setReversed(true)
+```
+
+You use a positive value (some number greater than `0`) to drive you motor in the default direction. If you're using a motor in a way that makes more sense for your program to use a negative speed setting for that direction, you can reverse the speed range.
+
+## Paramters
+
+* **reversed**: a [boolean](/types/boolean) value that is `false` if the motor will use a speed value between `0` and `100` to turn in the default direction. If `true`, the motor uses a speed value between `0` and `-100` to turn in the default direction.
+
+## Example
+
+Run the motor connected to port **A** for 2 seconds at a speed of `30`. Stop and switch the direciton of rotation. Run the motor at a speed of `-30`. Watch and see if the motor turns in the same direction as before.
+
+```blocks
+motors.largeA.setSpeed(30)
+loops.pause(2000)
+motors.largeA.stop()
+loops.pause(2000)
+motors.largeA.setReversed(true)
+motors.largeA.setSpeed(-30)
+loops.pause(2000)
+motors.largeA.stop()
+```
+
+## See also
+
+[stop](/reference/motors/motor/stop)
\ No newline at end of file
diff --git a/docs/reference/motors/motor/set-speed.md b/docs/reference/motors/motor/set-speed.md
new file mode 100644
index 00000000..d31b3b3a
--- /dev/null
+++ b/docs/reference/motors/motor/set-speed.md
@@ -0,0 +1,96 @@
+# set Speed
+
+Set the rotation speed of the motor as a percentage of maximum speed.
+
+```sig
+motors.largeA.setSpeed(50)
+```
+
+The speed setting is a pecentage of the motor's full speed. Full speed is the speed that the motor runs when the brick supplies maximum output voltage to the port.
+
+If you use just the **speed** number, the motor runs continously and won't stop unless you tell it to. You can also give a value for a certain amount of distance you want the motor to rotate for. The **value** can be an amount of time, a turn angle in degrees, or a number of full rotations.
+
+If you decide to use a **value** of rotation distance, you need to choose a type of movement **unit**.
+
+## ~hint
+
+If you use a number of milliseconds as movement units, then you don't need to include the unit type.
+
+To run the motor for 500 milliseconds:
+
+```block
+motors.largeA.setSpeed(50, 500)
+```
+
+## ~
+
+Here is how you use each different movement unit to run the motor for a fixed rotation distance.
+
+```typescript
+// Run motor for 700 Milliseconds. 
+motors.largeA.setSpeed(25, 700, MoveUnit.MilliSeconds);
+
+// Run motor for 700 Milliseconds again but no units specified. 
+motors.largeA.setSpeed(25, 700);
+
+// Run the motor for 45 seconds
+motors.largeA.setSpeed(50, 45, MoveUnit.Seconds);
+
+// Turn the motor for 270 degrees
+motors.largeA.setSpeed(50, 270, MoveUnit.Degrees)
+
+// Turn the motor at full speed for 9 full rotations
+motors.largeA.setSpeed(100, 9, MoveUnit.Rotations);
+```
+
+## Parameters
+
+* **speed**: a [number](/types/number) that is the percentage of full speed. A negative value runs the motor in the reverse direction.
+* **value**: the [number](/types/number) of movement units to rotate for. A value of `0` means run the motor continuously.
+* **unit**: the movement unit of rotation. This can be `milliseconds`, `seconds`, `degrees`, or `rotations`. If the number for **value** is `0`, this parameter isn't used.
+
+## ~hint
+
+** Reverse is negative speed**
+
+Turning the motor in the opposite direction (reverse) is simple. Reverse is just a negative speed setting. To drive the motor in reverse at 25% speed:
+
+```block
+motors.largeB.setSpeed(-25)
+```
+
+## ~
+
+## Examples
+
+### Drive the motor for 20 seconds
+
+Run the motor connected to port **A** continuously. Pause 20 seconds and then stop the motor.
+
+```blocks
+motors.largeA.setSpeed(75)
+loops.pause(20000)
+motors.largeA.stop()
+```
+
+### Backwards motion
+
+Run the motor connected to port **A** in reverse. Pause 5 seconds and then stop the motor.
+
+```blocks
+motors.largeA.setSpeed(-60)
+loops.pause(5000)
+motors.largeA.stop()
+```
+
+### Run the motor for 35 rotations
+
+Run the motor connected to port **B** for 35 full rotations and then stop.
+
+```blocks
+motors.largeB.setSpeed(50, 35, MoveUnit.Rotations)
+```
+
+## See also
+
+[tank](/reference/motors/synced/tank), [steer](/reference/motors/synced/steer), [stop](/reference/motors/motor/stop)
\ No newline at end of file
diff --git a/docs/reference/motors/motor/speed.md b/docs/reference/motors/motor/speed.md
new file mode 100644
index 00000000..d6f12079
--- /dev/null
+++ b/docs/reference/motors/motor/speed.md
@@ -0,0 +1,33 @@
+# speed
+
+Get the current speed of motor rotation as a percentage of maximum speed.
+
+```sig
+motors.largeA.speed()
+```
+
+The actual speed of the motor is the same or very close to it's current speed setting when the motor is regulated. If not regulated, the actual speed can change from the set speed when a force, or load, is applied to it.
+
+## Returns
+
+* a [number](/types/number) which is the motor's current speed. This value is a percentage of maximum speed from `0` to `100`. This number is negative, like `-27`, if the direction of rotation is in reverse.
+
+## Example
+
+Turn speed regulation off and report the actual speed of the large motor in the forward direction. Occasionally touch the wheel on the motor to see if it changes the speed.
+
+```blocks
+motors.largeA.setRegulated(false)
+motors.largeA.setSpeed(55)
+brick.showString("Actual speed:", 1)
+for (let i = 0; i < 30; i++) {
+    loops.pause(500)
+    brick.showNumber(motors.largeA.speed(), 3)
+}
+motors.largeA.stop()
+```
+
+## See also
+
+[tacho](/reference/motors/motor/tacho), [speed](/reference/motors/motor/speed),
+[reset](/reference/motors/motor/reset), [clear counts](/reference/motors/motor/clear-counts)
\ No newline at end of file
diff --git a/docs/reference/motors/motor/stop.md b/docs/reference/motors/motor/stop.md
new file mode 100644
index 00000000..404b7032
--- /dev/null
+++ b/docs/reference/motors/motor/stop.md
@@ -0,0 +1,25 @@
+# stop
+
+Stop the motor.
+
+```sig
+motors.largeA.stop()
+```
+
+The motor stops but any motion caused from previously running the motor continues until it runs down. If you are driving your brick and then stop the motors, it will coast for awhile before stopping. If you want the brick to stop right away, use ``||motors:set brake||`` to stop it.
+
+## Example
+
+Run the motor connected to port **A** for 2 seconds at a speed of `30`. Stop and wait for 2 seconds, then continue at a speed of `50`.
+
+```blocks
+motors.largeA.setSpeed(30)
+loops.pause(2000)
+motors.largeA.stop()
+loops.pause(2000)
+motors.largeA.setSpeed(50)
+```
+
+## See also
+
+[set brake](/reference/motors/motor/set-brake), [reset](/reference/motors/motor/reset),
\ No newline at end of file
diff --git a/docs/reference/motors/motor/tacho.md b/docs/reference/motors/motor/tacho.md
new file mode 100644
index 00000000..8832bf53
--- /dev/null
+++ b/docs/reference/motors/motor/tacho.md
@@ -0,0 +1,48 @@
+# tacho
+
+Get the current number of degress of rotation.
+
+```sig
+motors.largeA.tacho()
+```
+
+The motors that come with your @boardname@ have a way to detect their own turning motion. They count the amount of motor rotation in degrees. The motor will count each degree of angle rotation up to 360 degrees for a full rotation. As the motor continues to turn, the _tacho_ count keeps adding up the degrees even past one full rotation. So, if the motor makes 3 complete rotations, the count will be 1080.
+
+The name _tacho_ comes from the first part of the word [tachometer](https://en.wikipedia.org/wiki/Tachometer) which is a device to measure how fast something is turning. The motor controller in the brick uses the tacho count to regulate the motor's speed.
+
+## ~hint
+
+**Measure RPM**
+
+A standard way to know how fast a motor is turning is by measuring its _revolutions per minute_ (rpm). One revolution is the same thing as a rotation, or one turn. How do you measure rpm? Well, here's a simple way:
+
+1. Record the current tacho count
+2. Run the motor for 60 seconds
+3. Get the tacho count again
+4. Subtract the first tacho count from the second one
+5. Divide that number by `360`
+
+## ~
+
+## Returns
+
+* a [number](/types/number) which is the total count of degrees of rotation that the motor has turned since it was first started or reset.
+
+## Example
+
+Run the motor connected to port **A** at half speed for 5 seconds. Display the number of full rotations on the screen.
+
+```blocks
+motors.largeA.setSpeed(50)
+loops.pause(5000)
+motors.largeA.stop()
+brick.showString("Motor rotations:", 1)
+brick.showNumber(motors.largeA.tacho() / 360, 3)
+motors.largeA.setSpeed(50)
+```
+
+## See also
+
+[angle](/reference/motors/motor/tacho), [speed](/reference/motors/motor/speed),
+[set regulated](/reference/motors/motor/set-regulated),
+[reset](/reference/motors/motor/reset), [clear counts](/reference/motors/motor/clear-counts)
diff --git a/docs/reference/motors/stop-all-motors.md b/docs/reference/motors/stop-all-motors.md
new file mode 100644
index 00000000..866e8497
--- /dev/null
+++ b/docs/reference/motors/stop-all-motors.md
@@ -0,0 +1,25 @@
+# stop All Motors
+
+Stops all motors currently running on the brick.
+
+```sig
+motors.stopAllMotors();
+```
+
+The motors stops but any motion caused from previously running the motors continues until it runs down. If you are driving your brick and then stop the motors, it will coast for awhile before stopping. 
+
+## Example
+
+Tank the @boardname@ forward at half speed for 5 seconds and then stop.
+
+```blocks
+motors.largeAB.tank(50, 50);
+loops.pause(5000);
+motors.stopAllMotors();
+```
+
+## See also
+
+[stop](/reference/motors/motor/stop), 
+[reset](/reference/motors/motor/reset),
+[set brake](/reference/motors/motor/set-brake)
\ No newline at end of file
diff --git a/docs/reference/motors/synced/steer.md b/docs/reference/motors/synced/steer.md
new file mode 100644
index 00000000..a1b347db
--- /dev/null
+++ b/docs/reference/motors/synced/steer.md
@@ -0,0 +1,84 @@
+# steer
+
+Steer the brick in one direction using a turn ratio between two motors.
+
+```sig
+motors.largeAB.steer(0, 0)
+```
+
+A brick driving with two motors can steer itself by changing the speed of one motor compared to the speed of the other. To make a slow turn to the left, you might make the right motor run slightly faster than the left one. To make a fast, or sharp, turn to the right, the left motor could run at least twice as fast as the right one.
+
+The @boardname@ steers by using a percentage value of _follow_ for one of the motors. This means that the motor in the turn direction will rotate slower than the other. It is the _follower_ motor and the other motor is the _drive_ motor. The drive motor runs at a percentage of full speed set in **speed**. The follower motor runs at a percentage of speed of the drive motor. So, it runs at a percentage of a percentage of full speed.
+
+To make the turn happen you give a _turn ratio_ which is a percentage value of steer to the left or right. If you want to steer to the left at 30% of the of the drive motor speed, use the value of `-30` for **turnRatio**. Left turns use negative values and right turns use positive values. A really sharp turn to the right might use a turn ratio value of `80`.
+
+## Speed and distance
+
+The speed setting is a pecentage of the motor's full speed. Full speed is the speed that the motors run when the brick supplies maximum output voltage to the port.
+
+If you use just the **speed** number, the motors run continously and won't stop unless you tell them to. You can also give a value for a certain amount of distance you want the motors to rotate for. The **value** can be an amount of time, a turn angle in degrees, or a number of full rotations.
+
+If you decide to use a **value** of rotation distance, you need to choose a type of movement **unit**. Also, if you use a number of milliseconds as movement units, then you don't need to include the unit type. The description in [set speed](/reference/motors/motor/set-speed) shows how to use different movement units.
+
+## Parameters
+
+* **turnRatio**: a [number](/types/number) that is the percentage of speed of the drive motor. The follower motor runs at this speed. A negative number steers to the left and a positive number steers to the right. This is a number between `-100` and `100`.
+* **speed**: a [number](/types/number) that is the percentage of full speed. A negative value runs the motors in the reverse direction. This is the speed that the drive motor runs at.
+* **value**: the [number](/types/number) of movement units to rotate for. A value of `0` means run the motor continuously.
+* **unit**: the movement unit of rotation. This can be `milliseconds`, `seconds`, `degrees`, or `rotations`. If the number for **value** is `0`, this parameter isn't used.
+
+## ~hint
+
+** Reverse is negative speed**
+
+Steering the brick backwards (in reverse) is simple. Reverse is just a negative speed setting. To steer the brick to the left in reverse at 75% speed:
+
+```block
+motors.largeBC.steer(-15, -75)
+```
+
+## ~
+
+## Examples
+
+### Make a slight right
+
+Turn to the right with a turn ratio of 10%.
+
+```block
+motors.largeBC.steer(10, 55)
+```
+
+### Make a sharp left
+
+Turn sharply to the left.
+
+```block
+motors.largeBC.steer(-80, 40)
+```
+
+### Steer straight
+
+Use **steer** but go straight ahead.
+
+```block
+motors.largeBC.steer(0, 100)
+```
+
+### Sneaky snake
+
+Steer the brick in a snake pattern for a short time.
+
+```block
+for (let i = 0; i < 4; i++) {
+    motors.largeBC.steer(30, 30)
+    loops.pause(5000)
+    motors.largeBC.steer(-30, 30)
+    loops.pause(5000)
+}
+motors.stopAllMotors()
+```
+
+## See also
+
+[tank](/reference/motors/synced/tank), [set speed](/reference/motors/motor/set-speed)
\ No newline at end of file
diff --git a/docs/reference/motors/synced/tank.md b/docs/reference/motors/synced/tank.md
new file mode 100644
index 00000000..bfcaf2a6
--- /dev/null
+++ b/docs/reference/motors/synced/tank.md
@@ -0,0 +1,81 @@
+# tank
+
+Rotate two motors in synchronization.
+
+```sig
+motors.largeAB.tank(50, 50)
+```
+
+Tanking the brick will drive two motors in synchronization. This means that both motors will start at the same time. Also, each motor uses the same amount of rotation when running at the same speed. You can use different speed values for each motor to perform turns or spins.
+
+## Speed and distance
+
+The speed setting is a pecentage of the motor's full speed. Full speed is the speed that the motors run when the brick supplies maximum output voltage to the port.
+
+If you use just the **speed** number, the motors run continously and won't stop unless you tell them to. You can also give a value for a certain amount of distance you want the motors to rotate for. The **value** can be an amount of time, a turn angle in degrees, or a number of full rotations.
+
+If you decide to use a **value** of rotation distance, you need to choose a type of movement **unit**. Also, if you use a number of milliseconds as movement units, then you don't need to include the unit type. The description in [set speed](/reference/motors/motor/set-speed) shows how to use different movement units.
+
+## Parameters
+
+* **speedLeft**: a [number](/types/number) that is the percentage of full speed for the motor attached to the left of the brick. A negative value runs the motor in the reverse direction.
+* **speedRight**: a [number](/types/number) that is the percentage of full speed for the motor attached to the right of the brick. A negative value runs the motor in the reverse direction.
+* **value**: the [number](/types/number) of movement units to rotate for. A value of `0` means run the motor continuously.
+* **unit**: the movement unit of rotation. This can be `milliseconds`, `seconds`, `degrees`, or `rotations`. If the number for **value** is `0`, this parameter isn't used.
+
+## ~hint
+
+** Reverse is negative speed**
+
+Tankng the brick in the opposite direction (reverse) is simple. Reverse is just a negative speed setting. To drive the motors in reverse at 75% speed:
+
+```block
+motors.largeBC.tank(-75, -75)
+```
+
+## ~
+
+## Examples
+
+### Tank forward and backward
+
+Move the brick straight ahead and then go backward.
+
+```blocks
+motors.largeAB.tank(75, 75)
+loops.pause(10000)
+motors.largeAB.tank(-55, -55)
+loops.pause(10000)
+motors.stopAllMotors()
+```
+
+### Slip steer
+
+Run the right motor at 50% and let the left motor spin freely.
+
+```blocks
+motors.largeAB.tank(0, 50)
+```
+
+### Skid steer
+
+Set the brake on the right motor. Run the left motor at 60% and let the right motor skid.
+
+```blocks
+motors.largeB.setBrake(true)
+motors.largeAB.tank(60, 0)
+```
+
+### Spin around
+
+Run both motors in opposite directions to spin the brick around to the left.
+
+```blocks
+motors.largeAB.tank(-30, 30)
+loops.pause(5000)
+motors.stopAllMotors()
+```
+
+## See also
+
+[steer](/reference/motors/synced/steer), [set speed](/reference/motors/motor/set-speed)
\ No newline at end of file
diff --git a/libs/core/output.ts b/libs/core/output.ts
index 28c8639e..54e00659 100644
--- a/libs/core/output.ts
+++ b/libs/core/output.ts
@@ -113,6 +113,7 @@ namespace motors {
     //% blockId=motorStopAll block="stop all motors"
     //% weight=1
     //% group="Move"
+    //% help=motors/stop-all-motors
     export function stopAllMotors() {
         const b = mkCmd(Output.ALL, DAL.opOutputStop, 0)
         writePWM(b)
@@ -164,6 +165,7 @@ namespace motors {
         //% blockId=outputMotorSetBrakeMode block="set %motor|brake %brake=toggleOnOff"
         //% weight=60 blockGap=8
         //% group="Move"
+        //% help=motors/motor/set-brake
         setBrake(brake: boolean) {
             this.init();
             this._brake = brake;
@@ -175,6 +177,7 @@ namespace motors {
         //% blockId=motorSetReversed block="set %motor|reversed %reversed=toggleOnOff"
         //% weight=59 blockGap=8
         //% group="Move"
+        //% help=motors/motor/set-reversed
         setReversed(reversed: boolean) {
             this.init();
             const b = mkCmd(this._port, DAL.opOutputPolarity, 1)
@@ -187,6 +190,7 @@ namespace motors {
          */
         //% weight=6 blockGap=8
         //% group="Move"
+        //% help=motors/motor/stop
         //% blockId=motorStop block="stop %motors|"
         stop() {
             this.init();
@@ -206,6 +210,7 @@ namespace motors {
          */
         //% weight=5
         //% group="Move"
+        //% help=motors/motor/reset
         //% blockId=motorReset block="reset %motors|"
         reset() {
             this.init();
@@ -221,6 +226,7 @@ namespace motors {
         //% blockId=motorSetSpeed block="set %motor|speed to %speed=motorSpeedPicker|%"
         //% weight=100 blockGap=8
         //% group="Move"
+        //% help=motors/motor/set-speed
         setSpeed(speed: number, value: number = 0, unit: MoveUnit = MoveUnit.MilliSeconds) {
             this.init();
             speed = Math.clamp(-100, 100, speed >> 0);
@@ -338,6 +344,7 @@ namespace motors {
         //% blockId=outputMotorSetRegulated block="set %motor|regulated %value=toggleOnOff"
         //% weight=58
         //% group="Move"
+        //% help=motors/motor/set-regulated
         setRegulated(value: boolean) {
             this._regulated = value;
         }
@@ -350,6 +357,7 @@ namespace motors {
         //% weight=72 
         //% blockGap=8
         //% group="Counters"
+        //% help=motors/motor/speed
         speed(): number {
             this.init();
             return getMotorData(this._port).actualSpeed;
@@ -363,6 +371,7 @@ namespace motors {
         //% weight=70
         //% blockGap=8
         //% group="Counters"
+        //% help=motors/motor/angle
         angle(): number {
             this.init();
             return getMotorData(this._port).count;
@@ -377,6 +386,7 @@ namespace motors {
         //% weight=69
         //% blockGap=8
         //% group="Counters"
+        //% help=motors/motor/tacho
         tacho(): number {
             this.init();
             return getMotorData(this._port).tachoCount;
@@ -389,6 +399,7 @@ namespace motors {
         //% weight=68
         //% blockGap=8
         //% group="Counters"
+        //% help=motors/motor/clear-counts
         clearCounts() {
             this.init();
             const b = mkCmd(this._port, DAL.opOutputClearCount, 0)
@@ -488,6 +499,7 @@ namespace motors {
         //% weight=96 blockGap=8
         //% inlineInputMode=inline
         //% group="Move"
+        //% help=motors/synced/tank
         tank(speedLeft: number, speedRight: number, value: number = 0, unit: MoveUnit = MoveUnit.MilliSeconds) {
             this.init();
 
@@ -514,6 +526,7 @@ namespace motors {
         //% turnRatio.min=-200 turnRatio=200
         //% inlineInputMode=inline
         //% group="Move"
+        //% help=motors/synced/steer
         steer(turnRatio: number, speed: number, value: number = 0, unit: MoveUnit = MoveUnit.MilliSeconds) {
             this.init();
             speed = Math.clamp(-100, 100, speed >> 0);