[luatex] \predisplaydirection from etex in luatex has no effect

[Vafa Khalighi]

Ok, now I only need the exact meaning of the values.

>
>
If you give value, say, 0 or a positive value, say 1, there is no difference
(i.e. \eqno apears on RHS, and \leqno apears on LHS) but if you give a
negative value, say -1, then \eqno will appear on LHS and \leqno will appear
on RHS.

-- 
Best wishes,
Vafa Khalighi
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