}

    /*
     * Option -ttycontrol {DTR 1 RTS 0 BREAK 0}
     */

    if ((len > 4) && (strncmp(optionName, "-ttycontrol", len) == 0)) {
	int i, result = TCL_OK;
	int i, res = TCL_OK;

	if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) {
	    return TCL_ERROR;
	}
	if ((argc % 2) == 1) {
	    if (interp != NULL) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"bad value \"%s\" for -ttycontrol: should be "
			"a list of signal,value pairs", value));
		Tcl_SetErrorCode(interp, "TCL", "VALUE", "TTYCONTROL", NULL);
	    }
	    Tcl_Free((void *)argv);
	    return TCL_ERROR;
	}

	for (i = 0; i < argc - 1; i += 2) {
	    if (Tcl_GetBoolean(interp, argv[i+1], &flag) == TCL_ERROR) {
		result = TCL_ERROR;
		res = TCL_ERROR;
		break;
	    }
	    if (strncasecmp(argv[i], "DTR", strlen(argv[i])) == 0) {
		if (!EscapeCommFunction(infoPtr->handle,
			(DWORD) (flag ? SETDTR : CLRDTR))) {
		    if (interp != NULL) {
			Tcl_SetObjResult(interp, Tcl_NewStringObj(
				"can't set DTR signal", -1));
			Tcl_SetErrorCode(interp, "TCL", "OPERATION",
				"FCONFIGURE", "TTY_SIGNAL", NULL);
		    }
		    result = TCL_ERROR;
		    res = TCL_ERROR;
		    break;
		}
	    } else if (strncasecmp(argv[i], "RTS", strlen(argv[i])) == 0) {
		if (!EscapeCommFunction(infoPtr->handle,
			(DWORD) (flag ? SETRTS : CLRRTS))) {
		    if (interp != NULL) {
			Tcl_SetObjResult(interp, Tcl_NewStringObj(
				"can't set RTS signal", -1));
			Tcl_SetErrorCode(interp, "TCL", "OPERATION",
				"FCONFIGURE", "TTY_SIGNAL", NULL);
		    }
		    result = TCL_ERROR;
		    res = TCL_ERROR;
		    break;
		}
	    } else if (strncasecmp(argv[i], "BREAK", strlen(argv[i])) == 0) {
		if (!EscapeCommFunction(infoPtr->handle,
			(DWORD) (flag ? SETBREAK : CLRBREAK))) {
		    if (interp != NULL) {
			Tcl_SetObjResult(interp, Tcl_NewStringObj(
				"can't set BREAK signal", -1));
			Tcl_SetErrorCode(interp, "TCL", "OPERATION",
				"FCONFIGURE", "TTY_SIGNAL", NULL);
		    }
		    result = TCL_ERROR;
		    res = TCL_ERROR;
		    break;
		}
	    } else {
		if (interp != NULL) {
		    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			    "bad signal name \"%s\" for -ttycontrol: must be"
			    " DTR, RTS or BREAK", argv[i]));
		    Tcl_SetErrorCode(interp, "TCL", "VALUE", "TTY_SIGNAL",
			    NULL);
		}
		result = TCL_ERROR;
		res = TCL_ERROR;
		break;
	    }
	}

	Tcl_Free((void *)argv);
	return result;
	return res;
    }

    /*
     * Option -sysbuffer {read_size write_size}
     * Option -sysbuffer read_size
     */