Looks Blocks, Scratch Wiki

Looks Blocks are blocks that allow you to edit the way your sprite looks. It can also change costumes for your sprite and make your sprite say something. This is an important block if you want your project to be with buttons. You can make your sprite say something by dragging the "Say () for () seconds" to your desired spot, then change the "Say >()< for () seconds" to the message you want. And if you want, change the "Say () for >()< seconds" to change how many seconds the message will appear.

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