tape.label

defines a Pick 'tape' label.

Traditionally, Pick 'tapes' have an identifying 'label' written on the first 80 bytes of the tape.

Tape Element Element
Position Length Description
-------- ------- ----------------------------------
01 01 Label Identifier. Always an 'L'.

02 (space)

03 - 06 04 Record Length (in hexadecimal)
'01F4' = 500-byte record
'03E8' = 1000-byte record
'4000' = 16384-byte record

07 (space)

08 - 15 08 System Time at time of tape-writing.
'00:00:00' format

16 - 17 02 (spaces)

18 - 28 11 System Date at time of tape-writing.
'MMM DD YYYY' format

29 01 (space)

30 - 77 48 Label Header Text.

78 01 (space)

79 - 80 02 Tape volume (reel) number.
-------- ------- ----------------------------------

If the tape is created by a 't-dump', the label contains the source filename and text specified in 't-dump's 'heading' option (if any).

If the tape is created by a 'file-save', 'account-save', or 'save', then it contains the word 'DATA', and optionally, the information entered at the 'file-save tape label:' prompt.

If the tape is created as Spooler output, the label contains the word 'SPOOLER', and optionally, the account name and user-id of the creator.