vi with unicode character

To: For users of Fedora Core releases <fedora-list@xxxxxxxxxx>
Subject: vi with unicode character
From: Hanny Tidore <htfrontier@xxxxxxxxx>
Date: Fri, 6 Jan 2006 11:43:46 +0800
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Reply-to: For users of Fedora Core releases <fedora-list@xxxxxxxxxx>

Hi,

How can I use vi to insert unicode character into a text file ? Or is there any other command line editor that can edit unicode ?

Thanks.
Hanny