Index: operation.h
===================================================================
--- operation.h	(revision 10720)
+++ operation.h	(revision 10721)
@@ -101,6 +101,10 @@
 	unsigned long flag; /* pcb_flag_values_t */
 } pcb_opctx_chgflag_t;
 
+typedef struct {
+	pcb_board_t *pcb;
+} pcb_opctx_noarg_t;
+
 typedef union {
 	pcb_opctx_buffer_t buffer;
 	pcb_opctx_chgname_t chgname;
@@ -113,6 +117,7 @@
 	pcb_opctx_remove_t remove;
 	pcb_opctx_rotate_t rotate;
 	pcb_opctx_chgflag_t chgflag;
+	pcb_opctx_noarg_t noarg;
 } pcb_opctx_t;
 
 /* pointer to low-level operation (copy, move and rotate) functions */