{ "Grayscale", NULL, N_("Toggle _grayscale"), "<shift>G", N_("Toggle grayscale"), CB(layout_menu_alter_desaturate_cb), FALSE},
{ "ImageOverlay", NULL, N_("Image _Overlay"), NULL, N_("Image Overlay"), CB(layout_menu_overlay_cb), FALSE },
{ "ImageHistogram", NULL, N_("_Show Histogram"), NULL, N_("Show Histogram"), CB(layout_menu_histogram_cb), FALSE },
{ "Grayscale", NULL, N_("Toggle _grayscale"), "<shift>G", N_("Toggle grayscale"), CB(layout_menu_alter_desaturate_cb), FALSE},
{ "ImageOverlay", NULL, N_("Image _Overlay"), NULL, N_("Image Overlay"), CB(layout_menu_overlay_cb), FALSE },
{ "ImageHistogram", NULL, N_("_Show Histogram"), NULL, N_("Show Histogram"), CB(layout_menu_histogram_cb), FALSE },