HP 82104A Owner's Handbook Manual page 64

62 Messages and Errors
A ""Write-All'" Card
7P HP-67/HP-97 Program Card
7D HP-67/HP-97 Program Card
and nn is the track number of the track just
verified.
WORKING A time-consuming system task is being per-
formed. (Such as translation of a HP-67/HP-97
program card.)