The Raise Layers command raises the selected
layers one position in the layer stack. If the selected layers
already start at the top, or if there is only one layer, this menu entry is
disabled.
7.19.1. コマンドの呼び出し方
You can access this command
From the main menu through
Layer → Stack → Raise Layers.
By clicking the up-arrow icon at the bottom of the Layers dialog.
