No subject

rules, there is no otherwise covered case where mixing AN and EN leads to a
label that violates the requirements (as distinct from the rules) of bidi. =
 As
stated earlier, a label containing an AN is an RTL label.  An RTL label mus=
t
start with an AL or R (rule 1) and must contain only R, AL, AN, EN, ES, CS,
ET, ON, BN or NSM.  Note that the only strong characters in this label are
AL and R (L is not allowed and sor is excluded because the first character
must be AL or R).  Given that, no EN can resolve to an L
[http://unicode.org/reports/tr9/#W7], therefore all AN and EN will resolve
to the same levels.

Or perhaps I am missing something?

James Mitchell