IO::Handle->output_record_separator( EXPR )

$= The current page length (printable lines) of the currently selected output channel. The default is 60. Mnemonic:

$] The revision, version, and subversion of the Perl interpreter, represented as a decimal of the form 5.XXXYYY, where XXX is the version /

$FORMAT_TOP_NAME

$" When an array or an array slice is interpolated into a double-quoted string or a similar context such as /

@+ This array holds the offsets of the ends of the last successful submatches in the currently active dynamic scope.

$INPUT_RECORD_SEPARATOR

%SIG The hash %SIG contains signal handlers for signals. For example:

$[ This variable stores the index of the first element in an array, and of the first character in a substring. The default is 0, but you could

@- $-[0] is the offset of the start of the last successful match