| When the flag is clicked, the script activates. |
| Scripts placed underneath this block will activate when the specified key is pressed.
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| When the backdrop switches to the one chosen, the script activates.
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| When the sprite is clicked, the script activates.
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| When the broadcast is received, the script activates. |
| Sends a broadcast throughout the Scratch program, activating When I Receive () blocks that are set to that broadcast. |
| Like the Broadcast () block, but pauses the script until all scripts activated by the broadcast are completed. |