You are viewing the version of this documentation from Perl 5.35.9. This is a development version of Perl.
HANDLE->format_name(EXPR)
$FORMAT_NAME
$~

The name of the current report format for the currently selected output channel. The default format name is the same as the filehandle name. For example, the default format name for the STDOUT filehandle is just STDOUT.

Mnemonic: brother to $^.