2011

Table Of Contents
the composite view is constantly maintained. Individual layers can also be
muted selectively.
Committing and Undoing Operations
You can undo multiple paint strokes in layer-based Paint. In the context of
undo, a stroke is whatever you paint on the canvas until you commit.
Do any of the following to commit paint strokes to the undo stack:
Press any key.
Move the cursor out of the current viewport.
For example, if you use a 20-pixel brush to apply several strokes to the canvas
and then click Ctrl + Z (for Windows and Linux) or Cmd + Z (for Mac OS), all
of the strokes created with this brush are erased. On the other hand, if you
press Spacebar between each stroke and then click Ctrl + Z (for Windows and
Linux) or Cmd + Z (for Mac OS), the strokes will be erased one at a time.
Paint UI
The Paint tool UI consists of three areas:
(a) Layer editor (b) Paint brush controls (c) Stroke controls
Layer Editor
The Layer Editor lets you create layers and reorder them. For each layer, you
can apply a blending mode and set the opacity to define how it is blended
with the layer below it. You can also mute layers or use them in reveal
operations. The current layer indicates which layer is being drawn into. From
the current layer, you can also select either the front or the alpha as the target.
568 | Chapter 24 Raster Paint