Global
Class: constants
Reusable constants.
keys - A mapping of key names to their corresponding identifiers.
### keyCodes - A mapping of key names to their corresponding keyCodes (DEPRECATED).
constants.keys.tab- the tab keyconstants.keys.enter- the enter keyconstants.keys.esc- the escape keyconstants.keys.space- the space keyconstants.keys.left- the left arrow keyconstants.keys.up- the up arrow keyconstants.keys.right- the right arrow keyconstants.keys.down- the down arrow key