$OSNAME

$LIST_SEPARATOR

$LAST_SUBMATCH_RESULT

$FORMAT_LINES_PER_PAGE

$; The subscript separator for multidimensional array emulation. If you refer to a hash element as

IO::Handle->format_line_break_characters EXPR

$PID

HANDLE->format_lines_per_page(EXPR)

$EUID

${^LAST_FH} This read-only variable contains a reference to the last-read filehandle. This is set by