Index: obj_pstk_op.h
===================================================================
--- obj_pstk_op.h	(revision 12970)
+++ obj_pstk_op.h	(revision 12971)
@@ -39,6 +39,7 @@
 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);
+void *pcb_pstkop_rotate(pcb_opctx_t *ctx, pcb_pstk_t *ps);
 
 void *pcb_pstkop_change_size(pcb_opctx_t *ctx, pcb_pstk_t *ps);
 void *pcb_pstkop_change_2nd_size(pcb_opctx_t *ctx, pcb_pstk_t *ps);