SuikaWiki/0.9


* 意味

[4] 米国の商業者などの間で、単価を表すのに ''at'' のことを ''@''
とかいたそうです。

[5] 現在では一般に ''at'' の省略として ''@''
を使います。もちろん formal なものではありませんが。

[6] >>4,>>5 とはいえ [[ASCII]] の選ばれし94文字に入っていたのですから、かなり使われていたのでしょう。

[7] >>5 [[RFC733]] の頃に、今でいうところの[[電子メイル]]の[[アドレス]]を表す文字列の中の
''at'' の代わりに ''@'' を使うようになり、 [[RFC822]]
でこれが標準とされました。その後の [[Internet]] 
の普及により、この ''@'' はメイル・アドレス,
引いてはネットワークの象徴みたいなものに広く一般に思われているようです。
(少なくても日本では。)


* 名前

[1] この記号の英語での呼び名は ''at sign'' ですが、日本では
アットマークという呼び方が広まっています。

[2] これに追随して [[JIS]] (どの規格だったっけ?) にも
''アットマーク''という名称が載ってしまいました。

てことで、もうアットマークも公認されたとみなしていいんでは。

[3] [[ISO/IEC10646]] の名前は ''COMMERCIAL AT''。
- [4] 2002-09-29 (Sun) 20:36:53 ''[[名無しさん]]'' : [[なると]]と呼ぶ人もいます。


* メモ

- [8] >>4 書類とめるクリップにも似てる気がするな。

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