At 23:45 +0000 2006-02-15, Richard Wordingham wrote:

>New Tai Lue final consonants differ from the base consonants by a
>small circle at the bottom right, generally connected to the rest of
>the consonant by a small stroke. There are illustrations at
>http://www.unicode.org/charts/PDF/U1980.pdf .

I think the final consonants differ by having an end-stroke, which
happens to end in a circular finial in some fonts.
--
Michael Everson * http://www.evertype.com