Index: layer_vis.c
===================================================================
--- layer_vis.c	(revision 24266)
+++ layer_vis.c	(revision 24267)
@@ -312,6 +312,22 @@
 	return -1;
 }
 
+void pcb_hid_save_and_show_layer_ons(int *save_array)
+{
+	int i;
+	for (i = 0; i < pcb_max_layer; i++) {
+		save_array[i] = PCB->Data->Layer[i].meta.real.vis;
+		PCB->Data->Layer[i].meta.real.vis = 1;
+	}
+}
+
+void pcb_hid_restore_layer_ons(int *save_array)
+{
+	int i;
+	for (i = 0; i < pcb_max_layer; i++)
+		PCB->Data->Layer[i].meta.real.vis = save_array[i];
+}
+
 static const char *layer_vis_cookie = "core_layer_vis";
 
 void pcb_layer_vis_init(void)