GIMP Plugin Registry

Actions:
> Hide layes without active
> Switch visible property
> Manage visibility (background, top, active, others layer)

Merge visible using the active layer transparency to create a mask, visible layers below are discarded.

This can be useful in 3d applications to preserve texture maps that belong in the alpha channel by using the bottom layer's mask to hold the information.

Appears in /Image/Merge Visible with Layer Mask & Alpha of the Image window.