A layer tab, or at least half a tab (possibly in the tools tab) needs to be added to the side-panel, presenting a Photoshop-like interface (with previews, if possible, not really required though) to select, reorder and toggle visibility of individual layers.
If the Graal NW format supports it in some way, naming layers would also be an option.
A layer tab, or at least half a tab (possibly in the tools tab) needs to be added to the side-panel, presenting a Photoshop-like interface (with previews, if possible, not really required though) to select, reorder and toggle visibility of individual layers.
If the Graal NW format supports it in some way, naming layers would also be an option.