private void ParseMI(ref string line, string fmt, int idx)
{
cnc.Motors[idx].Microstep.Value = MOTOR_STEP.Step_8;
if (scanf.Parse(line, string.Concat(fmt, " microsteps %d [%s]")) >= 1)
cnc.Motors[idx].Microstep.Set(scanf, UseResponseItems.Checked);
}