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From: jeff@mcnc.UUCP (Jeffrey Copeland)
Newsgroups: net.text
Subject: Re: a strange TeX font...
Message-ID: <1328@alvin.mcnc.UUCP>
Date: Fri, 2-May-86 09:21:37 EDT
Article-I.D.: alvin.1328
Posted: Fri May  2 09:21:37 1986
Date-Received: Sun, 4-May-86 07:15:30 EDT
References: <112@sbcs.UUCP>
Reply-To: jeff@alvin.UUCP (Jeffrey Copeland)
Distribution: net
Organization: Microelectronics Center of NC; RTP, NC
Lines: 4

I don't know about halfado, (you must have a more recent TeX
distribution than we do), but amtex10 and amtt10 are different.  
They differ in the positions < '040, for example having different 
selections of Greek characters.