Index: remove.h
===================================================================
--- remove.h	(revision 13338)
+++ remove.h	(revision 13339)
@@ -36,7 +36,11 @@
 	PCB_TYPE_POLY_POINT | PCB_TYPE_POLY | PCB_TYPE_RATLINE | PCB_TYPE_ARC | PCB_TYPE_ARC_POINT)
 
 pcb_bool pcb_remove_selected(void);
+
+/* Undoable delete (operation wrapper) */
 void *pcb_remove_object(int Type, void *Ptr1, void *Ptr2, void *Ptr3);
+
+/* Non-undoable delete (operation wrapper) */
 void *pcb_destroy_object(pcb_data_t *Target, int Type, void *Ptr1, void *Ptr2, void *Ptr3);
 
 #endif