Note: If the object doesn’t have a channel mask, this creates a chan- nel mask and puts the object in channel mask edit mode. In the Transparency palette: Click the Edit button when a masked object is selected. This places an object with a channel mask in chan- nel mask edit mode. If the object has a vector mask, it places the vec- tor mask in edit mode. In the Channels palette: When a paint object is in edit mode, click the channel mask to select it for editing. When any other object is in channel mask edit mode, the channel mask is the only channel that can be selected. Selecting views for channel mask editing You have a choice of view when you edit an object’s channel mask. You can display the object and the channel mask together, which shows you the overall effect of the mask as you edit it. Or, you can hide the object to concentrate on the channel mask alone. Selecting views in the Channels palette An eye symbol in the Channels palette appears to the left of a channel that is visible. The eye symbol disappears if a channel is hidden. When you edit a channel mask, the top channel in the palette repre- sents the object itself. For a typical paint object this channel is labeled with the image mode, such as RGB or CMYK. For other objects, the first channel is labeled “Object.” The channel mask of an object in edit mode is shown in the Channel Mask slot, which is below the channel list. To view the channel mask only:  Click the eye symbol next to the object or composite channel at the top of the channel list. This hides the object channel so only the channel mask is visible. To hide the channel mask:  Click the eye symbol next to the channel mask. This hides the effect of the channel mask on the object. At least one channel, either the composite/object channel or the chan- nel mask, must be visible. If only one is visible, you can’t hide it by clicking its eye symbol. To display a hidden channel:  Click to the left of the channel to restore the eye symbol.
Canvas 8 Help: SpriteLayer effects (12 of 24)                                                       Page #366