关于 Perl 内置符号

关于 Perl 内置符号
我用这段代码
[quote]use strict;
use warnings;

my $key;

foreach $key (keys %::){
print sprintf( "%20s", $key ), " => ", sprintf( "%-30s", $::{$key} ), "\n";
}[/quote]
获得了如下的结果：
[quote] / => *main::/
stderr => *main::stderr
_<.\win32.c => *main::_<.\win32.c
SIG => *main::SIG
_<perllib.c => *main::_<perllib.c
utf8:: => *main::utf8::
" => *main::"
ARNING_BITS => *main::ARNING_BITS
CORE:: => *main::CORE::
DynaLoader:: => *main::DynaLoader::
strict:: => *main::strict::
stdout => *main::stdout
attributes:: => *main::attributes::
=> *main::
stdin => *main::stdin
ARGV => *main::ARGV
INC => *main::INC
ENV => *main::ENV
Regexp:: => *main::Regexp::
_<..\perlio.c => *main::_<..\perlio.c
UNIVERSAL:: => *main::UNIVERSAL::
$ => *main::$
main:: => *main::main::
Carp:: => *main::Carp::
- => *main::-
Win32:: => *main::Win32::
PerlIO:: => *main::PerlIO::
_<..\universal.c => *main::_<..\universal.c
0 => *main::0
BEGIN => *main::BEGIN
=> *main:
@ => *main::@
_<..\xsutils.c => *main::_<..\xsutils.c
STDOUT => *main::STDOUT
IO:: => *main::IO::
=> *main::
_ => *main::_
+ => *main::+
Exporter:: => *main::Exporter::
STDERR => *main::STDERR
Internals:: => *main::Internals::
STDIN => *main::STDIN
warnings:: => *main::warnings::
DB:: => *main::DB::
<none>:: => *main::<none>::[/quote]
这应该算是 PerlInterpreter 的顶级符号表了吧？
可是其中有些符号实在是没见过。
请各位高人讲讲它们的意思。

wow，好多我也没见过，期待大牛的解释

hehe flw怎么不发到CU去呢.
hehe flw怎么不发到CU去呢，apile不知道来不来这里逛的，他可能知道不少

[quote]回复给 cristal : .
[quote]回复给 cristal : hehe flw怎么不发到CU去呢....[/quote]
发了，那边帖子沉得快。