While locked, an object will not receive incoming messages from other objects, or built-in messages such as
#touch. A locked object can still
#send messages to itself, as well as send outgoing messages to other objects. This allows objects to complete sequences of commands without interruption.
If a locked object reaches an
#end command (or the end of its program) without unlocking, it will become unresponsive, as there is no way to unlock an object remotely.
- A locked object executing
#send all:<message>will send <message> to itself as well.