Merge branch 'master' of https://github.com/Microsoft/pxt-microbit

docs/device.md

@@ -98,7 +98,7 @@ You can attach an external device such as a motor to these and power it using th
 
 ## Serial Communication
 
-The micro:bit can send an receive data via [serial communication](/device/serial). The serial data can be transfered via USB or BLE.
+The micro:bit can send and receive data via [serial communication](/device/serial). The serial data can be transfered via USB or BLE.
 
 ## Bluetooth Low Energy (BLE) Antenna
 
@@ -111,4 +111,4 @@ control the micro:bit or the micro:bit can control another BLE device.
 ## Technical Information
 
 The micro:bit has been designed to be a bare-board micro controller for use by children aged 11-12. 
-More information is available at the [Microbit Foundation web site](https://microbit.org/guide/.
+More information is available at the [Microbit Foundation web site](https://microbit.org/guide/).

docs/index-ref.json

@@ -1,3 +1,3 @@
 {
-    "appref": "v0.14.18"
+    "appref": "v0.14.22"
 }

docs/types/number.md

@@ -9,14 +9,14 @@ For example, this code displays the number 42:
 basic.showNumber(42);
 ```
 
-## #declareexample
+### #declareexample
 
 ```block
 let num = 42;
 basic.showNumber(42);
 ```
 
-## #functionreturnexample
+### #functionreturnexample
 
 For example the following code gets the display brightness 
 (using the [brightness function](/reference/led/brightness)) and stores the value in a variable named `brightness`:

libs/core/control.cpp

@@ -256,7 +256,7 @@ namespace control {
     }
 
     /**
-     * Raises an event in the event bus.
+     * Registers an event handler.
      */
     //% weight=20 blockGap=8 blockId="control_on_event" block="on event|from %src=control_event_source_id|with value %value=control_event_value_id"
     //% help=control/on-event