Cut(;.)with < has several uses
(chosen by the right argument); the phrase <@v avoids
the padding (and some domain errors) that may result from
applying v alone:
If y is a high-rank array, <"_1 y
or <"_2 y often gives a more intelligible
display than y itself.
The display of a boxed array would normally be corrupted by
control characters (such as carriage returns and linefeeds)
occurring therein; in the display such characters are replaced by spaces.
For example, try < 8 32 $ a.