Index: trunk/src/change.c
===================================================================
--- trunk/src/change.c	(revision 12775)
+++ trunk/src/change.c	(revision 12776)
@@ -426,7 +426,7 @@
 	NULL,
 	NULL,
 	pcb_subcop_change_flag,
-	NULL  /* padstack */
+	pcb_pstkop_change_flag
 };
 
 static pcb_opfunc_t InvalLabelFunctions = {
Index: trunk/src/obj_pstk_op.c
===================================================================
--- trunk/src/obj_pstk_op.c	(revision 12775)
+++ trunk/src/obj_pstk_op.c	(revision 12776)
@@ -155,3 +155,17 @@
 	return ps;
 }
 
+void *pcb_pstkop_change_flag(pcb_opctx_t *ctx, pcb_pstk_t *ps)
+{
+	static pcb_flag_values_t pcb_pstk_flags = 0;
+	if (pcb_pstk_flags == 0)
+		pcb_pstk_flags = pcb_obj_valid_flags(PCB_TYPE_PSTK);
+
+	if ((ctx->chgflag.flag & pcb_pstk_flags) != ctx->chgflag.flag)
+		return NULL;
+	if ((ctx->chgflag.flag & PCB_FLAG_TERMNAME) && (ps->term == NULL))
+		return NULL;
+	pcb_undo_add_obj_to_flag(ps);
+	PCB_FLAG_CHANGE(ctx->chgflag.how, ctx->chgflag.flag, ps);
+	return ps;
+}
Index: trunk/src/obj_pstk_op.h
===================================================================
--- trunk/src/obj_pstk_op.h	(revision 12775)
+++ trunk/src/obj_pstk_op.h	(revision 12776)
@@ -36,7 +36,9 @@
 
 void *pcb_pstkop_change_thermal(pcb_opctx_t *ctx, pcb_pstk_t *ps);
 
+void *pcb_pstkop_change_flag(pcb_opctx_t *ctx, pcb_pstk_t *ps);
 
+
 /*** TODO: unimplemented ones ***/
 
 void *pcb_pstkop_change_size(pcb_opctx_t *ctx, pcb_pstk_t *ps);
@@ -43,6 +45,4 @@
 void *pcb_pstkop_change_2nd_size(pcb_opctx_t *ctx, pcb_pstk_t *ps);
 void *pcb_pstkop_change_clear_size(pcb_opctx_t *ctx, pcb_pstk_t *ps);
 
-void *pcb_pstkop_change_flag(pcb_opctx_t *ctx, pcb_pstk_t *ps);
-
 void *pcb_pstkop_rotate90(pcb_opctx_t *ctx, pcb_pstk_t *ps);