5. Events
Event code blocks enable you to listen for events and react as appropriate.
5.1. When start is clicked (green flag)

This code block listens for when start
is clicked.
5.2. When a key is clicked
You may listen for almost any key being clicked.

This code block listens for when the space bar
is clicked.

This code block listens for when the up arrow
is clicked.

This code block listens for when the down arrow
is clicked.

This code block listens for when the right arrow
is clicked.

This code block listens for when the left arrow
is clicked.
5.3. When sprite is clicked

This code block listens for when a sprite is clicked.
5.4. When backdrop switches

This code block listens for when a backdrop switches.
5.5. When loudness exceeds

This code block listens for when the volume exceeds a threshold.
5.6. When timer exceeds

This code block listens for when the timer exceeds a threshold.
5.7. When message received

This code block listens for when a message is received.

This code block broadcasts a message.

This code block broadcasts a message and waits.