DVM_DUPLICATE     375 compiler/generate.c 	generate_code(ob, DVM_DUPLICATE);
DVM_DUPLICATE     433 compiler/generate.c     generate_code(ob, DVM_DUPLICATE);
DVM_DUPLICATE     449 compiler/generate.c     generate_code(ob, DVM_DUPLICATE);
DVM_DUPLICATE     496 compiler/generate.c 	generate_code(ob, DVM_DUPLICATE);
DVM_DUPLICATE     771 dvm/execute.c  	case DVM_DUPLICATE: