Creating masks

A masking object can consist of a single path or a compound path.

To mask objects:

1. Draw or use the selection tool to select the object to use as a mask.
2. Make sure that the object is on top of the objects you want to mask.

When you mask objects on different layers, keep in mind that objects on intermediate layers become part of the masked artwork.

3. Select the mask and the objects you want masked.
4. Choose Object > Clipping Mask > Make. The mask loses its paint attributes and is assigned a fill and stroke value of None.

To undo the effects of a mask:

1. Use the selection tool or drag a marquee to select the objects you no longer want to use as a mask.
2. Choose Object > Clipping Mask > Release.

Because the mask was assigned a fill and stroke value of None, it is not visible unless you select it or assign it new paint attributes.