Create a new layer at the bottom of the list. If any shells are picked, they will be moved into the new layer. Currently there's a limit of 5 layers.
U
Move the active layer up the list.
D
Move the active layer down the list.
X
Delete the active layer. Any shells in therfe will be moved into the top layer.
Move
Move all picked shells into active layer.
Each layer has four widgets:
Active
Click the gray button to make this the active layer. Shells not in the active layer are tinted gray and behave as if they are locked.
Name
Change the name of the layer.
Pick
Click the gray button to pick all shells in that layer. Click again to unpick the shells. This button also displays the number of shells in that layer.
Show
Click the toggle box to show or hide all shells in that layer.
