Working with brushes : Using brushes
 
Using brushes
When you choose a brush, you can modify its settings to achieve the effect you want. You can also reset the brush to its default settings.
When applying paint, you can undo and redo multiple brushstrokes.
To use a brush
Edit tab 
1 On the Tools toolbar, choose a brush tool.
2 On the Materials palette, choose the foreground and background colors and materials.
3 On the Tool Options palette, choose a tool from the Presets drop-list.
4 Choose a preset brush tip from the brush tip drop-list .
5 Specify the brush options, such as shape, size, opacity, hardness, thickness, and rotation.
6 Do one of the following:
To apply the foreground color or material, drag in the image.
To apply the background color or material, hold down the right mouse button, and drag in the image.
With the Airbrush tool, you can build up color in one area by clicking and holding the mouse at one position.
To paint a straight line, click once at the beginning point, press Shift, and then click the end point. To continue the straight line, move to the next point, press Shift, and then click again.
To reset a brush to its default settings
Edit tab 
1 On the Tool Options palette, click the Presets drop-list.
2 Click the Reset to Default button .
To undo the most recent brushstroke
Edit tab 
Click the Undo button on the Standard toolbar.
You can also press Ctrl + Z or use the History palette to undo the stroke.
To undo multiple brushstrokes
Edit tab 
Click the Undo button on the Standard toolbar multiple times.
You can also press Ctrl + Z multiple times or use the History palette to undo multiple strokes.
You can redo strokes by clicking the Redo button on the Standard toolbar, by pressing Ctrl + Alt + Z, or by using the History palette.