Changing the levels in bitmap transparency
You can use a bitmap to control the transparency levels of an object. After applying bitmap transparency, you can change the transparency levels.
To change the levels in a bitmap transparency
1. Select the object (see Selecting objects).
2. Choose the Transparency Tool.
3. Click on either the center transparency handle or one of the outer transparency handles to select it.
4. Move the Transparency Slider on the Transparency Tool Infobar. Or for precise control, type into the text box to the right.
Tips
The outer handles control the transparency level for the white areas of the bitmap and the center handle controls the black areas.
If none of the handles is selected, moving the slider applies a flat transparency to the object.
If you have several objects selected, you can select all fill handles of a particular type (for example all the center handles) by CTRL+Shift-clicking on one of the handles. Use Shift-click to deselect a handle or select an unselected handle.