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List 24: Extent unit code

Value Description Notes Issue number
02 Words Words of natural language text 2
03 Pages 10
04 Hours (integer and decimals) 0
05 Minutes (integer and decimals) 0
06 Seconds (integer only) 0
11 Tracks Of an audiobook on CD (or a similarly divided selection of audio files). Conventionally, each track is 3–6 minutes of running time, and track counts are misleading and inappropriate if the average track duration is significantly more or less than this. Note that track breaks are not necessarily aligned with structural breaks in the text (eg chapter breaks) 22
14 Hours HHH Fill with leading zeroes if any elements are missing 0
15 Hours and minutes HHHMM Fill with leading zeroes if any elements are missing 0
16 Hours minutes seconds HHHMMSS Fill with leading zeroes if any elements are missing 0
17 Bytes 10
18 Kbytes 0
19 Mbytes 0
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