These minimal services had resonances of the 19th-century parliamentary services and, among rail enthusiasts, they came to be referred to as "parliamentary trains" or, more colloquially, "parly" trains (following the abbreviation used in Victorian timetables) or "ghost trains". However, this terminology has no official standing. So-called parliamentary services are also typically run at inconvenient times, often very early in the morning, very late at night or in the middle of the day at the weekend. In extreme instances, rail services have actually been "temporarily" withdrawn and replaced by substitute bus services, to maintain the pretence that the service has not been withdrawn.