Where a held command of the newer version stands for a latched
function of the older one: the same function, on the same side where
the side counts, spanning the same stretch of the roll.
Only unambiguous correspondences are reported. Where two held commands
answer one latched interval, or one answers two, none of them is
reported and the editor is left to say what happened. Nothing is
invented either: both sides are perforations somebody punched, and all
this asserts is which stands for which.
Where a held command of the newer version stands for a latched function of the older one: the same function, on the same side where the side counts, spanning the same stretch of the roll.
Only unambiguous correspondences are reported. Where two held commands answer one latched interval, or one answers two, none of them is reported and the editor is left to say what happened. Nothing is invented either: both sides are perforations somebody punched, and all this asserts is which stands for which.