export declare enum ExtentUnit {
    PhysicalPieces,
    Characters,
    Words,
    Pages,
    Hours,
    Minutes,
    Seconds,
    Tracks,
    Discs,
    HoursHHH,
    HoursAndMinutesHHHMM,
    HoursMinutesSecondsHHHMMSS,
    Bytes,
    Kbytes,
    Mbytes
}