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To add Pen blocks to the Code tab:
1. Click the Add Extension button on the bottom-left
part of the Scratch window.

The Choose an Extension window opens. It displays
various extensions that can be added to the Code tab.

2. Click the Pen extension.

The Pen blocks are added to the Code tab.

Some of the Pen blocks are:

Block Function

Puts the pen of the sprite down so that it draws as it moves.

Pulls the pen of the sprite up so that it does not draw as it moves.

Clears all pen marks and stamps from the Stage.

Sets the thickness of the pen to a specified value.

Changes the thickness of the pen by a specified value.

Sets the pen’s specified attribute (colour, brightness,

saturation, or transparency) to a specified value.

Changes the pen’s specified attributes (colour, brightness,
saturation, or transparency) by a specified value.

Sets the pen’s colour to a specified colour.

Inserts the sprite’s image on the Stage.

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