=over

=item $ACCUMULATOR

=item $^A

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

=back