IO::Handle->format_line_break_characters EXPR

$LIST_SEPARATOR

$& The string matched by the last successful pattern match (not counting any matches hidden within a BLOCK or

$PID

$FORMAT_LINES_PER_PAGE

$^M By default, running out of memory is an untrappable, fatal error. However, if suitably built, Perl can use the contents of

$REAL_GROUP_ID

$EVAL_ERROR

IO::Handle->output_field_separator( EXPR )

$^P The internal variable for debugging support. The meanings of the various bits are subject to change, but currently indicate: