Why
use layers?
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Layers
allow users to work on separate images in order to modify sections
without changing the entire image.
The
example below contains three layers: the background yellow layer,
the red square layer and the green circle layer. If, for example,
the circle in this image were in the wrong place, you could easily
change its location by selecting the circle layer and moving the
circle without affecting the rest of the image.
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Notice the red arrow on the Layers
window to the left. It is pointing to an image that looks like an
eye. This image acts as a show/hide feature for the corresponding
layer. When the eye is open, that layer is visible. When the eye is
shut, the layer is not visible.
The green
arrow points to an image that looks like a paint brush. It
shows the layer that is active, in other words, the layer which
is currently editable.
The blue arrow points to an
image that looks like a vertical chain link. This links two layers
together. For example, since the square layer and the circle layer
are linked together, moving the position of the circle in the image
would also change the position of the square.
The
purple arrow points to the new
layer icon. A single-click on this icon will result in the automatic
creation of a new layer.
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