Comments on IDNA Bidi

Martin Duerst duerst at
Wed Jan 16 11:48:52 CET 2008

At 19:40 08/01/16, Cary Karp wrote:
>Is "visual order" as used here,
>> No two labels, when presented in visual order, should have the same
>> sequence of characters without also having the same sequence of
>> characters in network order
>identical to "display order" as used here?,
>> ... the label "123-456" will have a different display order in a RTL
>> context than in a LTR context.

Yes, it is identical.

>If it is, the text would likely benefit from eliminating any
>possibility of the terminology being taken ambiguously. If not, perhaps
>some further clarification would be useful.
>"Display" strikes me as the more objective term (being an attribute of
>what the machine does), to which "visual" is a cognitive correlate
>(being in the mind of the beholder).

Unicode TR9 (the BIDI algorithm) also uses 'display' more than 'visual',
so I think this is a good direction.

Regards,   Martin.

#-#-#  Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University
#-#-#       mailto:duerst at     

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