HANDLE->format_page_number(EXPR)
$^F The maximum system file descriptor, ordinarily 2. System file descriptors are passed to
${^RE_DEBUG_FLAGS} The current value of the regex debugging flags. Set to 0 for no debug output even when the re
$, The output field separator for the print operator. If defined, this value is printed between each of print's arguments. Default is
$EXTENDED_OS_ERROR
%OS_ERROR
$FORMAT_NAME
$COMPILING
$PERL_VERSION
$\ The output record separator for the print operator. If defined, this value is printed after the last of print's arguments. Default is
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