The Watcher class represents a Snap! variable watcher.
var property
The name of the associated variable.
style property
The style of the watcher.
x property
The X coordinate of the watcher.
y property
The Y coordinate of the watcher.
color property
A tuple representing the watcher's color in RGB format.
scope property
If applicable, the sprite to which the watcher's variable is scoped. If the variable is scoped for all sprites, this property will be set to Null.