From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?gb2312?B?wfXT7rGm?= <liuyubao@yingmi.cn>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Date: Mon, 14 May 2018 03:05:56 +0000
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Subject: Re: [9fans] how to undo in Rio shell window and Acme editor?
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