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Snap! Reference Manual Acknowledgements 1. Blocks, Scripts, and Sprites 2. Saving and Loading Projects and Media 3. Building a Block 4. First Class Lists 5. Typed Inputs 6. Procedures as Data 7. Object Oriented Programming with Sprites 8. OOP with Procedures 9. The Outside World 10. Continuations 11. Metaprogramming 12. User Interface Elements

Appendix

Blocks

All Snap! Blocks

Motion Blocks

Looks Blocks

Sound Blocks

Pen Blocks

clear pen down pen up pen down?set pen color to change pen by set pen to pen change pen size by set pen size to stamp fill write size pen trails paste on cut from Color Color Attribute new color

Control Blocks

Sensing Blocks

Operators Blocks

Variables Blocks

pen down?

Complete Me

The "pen down?" block

Help screen for the "pen down?" block

Example Images¶

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Example Projects¶

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set pen color to