$^A
The current value of the write()
accumulator for format()
lines. A format contains formline()
calls that put their result into $^A
. After calling its format, write()
prints out the contents of $^A
and empties. So you never really see the contents of $^A
unless you call formline()
yourself and then look at it. See perlform and formline PICTURE,LIST.
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