2.3.3 Lowering Layers
The Lower Layer entry in the Layers
menu shifts the active layer down by one in the layer stack, and Layer to Bottom moves it to the
bottom of the stack. The same functions are provided by the
downward-pointing arrow icon in the button bar. Clicking on the icon
lowers the active layer once, and Shift-clicking puts it to the bottom
of the stack. Note that if the lowest layer of the stack does not
have an alpha channel, another layer cannot be made lower than it.
