You can use the Eraser tool to remove pixels. By default, the Eraser tool pointer represents the size of the current eraser, but you can change the size and appearance of the pointer in the Preferences dialog box. For more information, see Editing preferences.

This is a picture of the feature being described.

Eraser tool

To erase pixels in a selected bitmap object or pixel selection:

  1. Select the Eraser tool.
  2. In the Property inspector, select the round or square eraser shape.
  3. Drag the Edge slider to set the softness of the eraser's edge.
  4. Drag the Size slider to set the size of the eraser.
  5. Drag the Eraser Opacity slider to set the degree of opacity.
  6. Drag the Eraser tool over the pixels you want to erase.