$\ The output record separator for the print operator. If defined, this value is printed after the last of print's arguments. Default is
$GID
$COMPILING
$FORMAT_NAME
$PROGRAM_NAME
$^X The name used to execute the current copy of Perl, from C's argv[
HANDLE->format_page_number(EXPR)
@INC The array @INC contains the list of places that the
$SYSTEM_FD_MAX
ARGV The special filehandle that iterates over command-line filenames in @ARGV . Usually
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