Keys::isDown
Function to check if specific key is pressed down.
Syntax
``` mp.keys.isDown(keyCode); ```
Required Argument
- keycode - hexadecimal code of [key](https://msdn.microsoft.com/en-us/library/windows/desktop/dd375731).
Return Value
- - `true` if the key specified is pressed, Otherwise `false`.
Example
An interval that runs every 100ms and outputs the state of the key bound. (F2)