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>> DAVID MALAN: Suppose we want Scratch to
keep meowing on his own without my

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having to click that green flag
again and again and again.

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Well, we can do that programmatically
by using a loop.

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Let's start there.

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>> When green flag clicked, let's now go
to the Control palette, where we can

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grab the Forever block.

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Now let's go to the Sound palette,
where Play Sound awaits.

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And let's also give Scratch a
moment to catch his breath.

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Under the control palette, we'll
find Wait One Second.

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Now we click that green flag.

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>> [MEOWING]

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>> Hm.

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Not very natural.

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Meowing too fast.

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Let's stop.

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Let's this time increase that wait time
from one second to two seconds

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and re-click that green flag.

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>> [MEOWING]

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>> Much more realistic.

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