LAYERS MENU
Layers manager
(Key:
Alt+Home)
In this menu you can set the following
options:
* Transparent color : This determines which
color index is considered transparent when
using layers. Click the button and then
click on the image to pick the right color,
or use ESC to cancel.
* Transparent background : When this option
is checked, all pixels of the transparent
color on layer 1 (background layer) will
be tagged as transparent in the final image.
Check this option if you want to make a
transparent GIF or PNG. These are the only
file formats that support this option.