\ltjdefcharrange{8}{"B4, "A8, "B1, "D7, "F7, "B0, "A7, "B6}
\ltjsetparameter{jacharrange={-1, +2, +3, -4, -5, +6, +7, +8}}
+\directlua{for x=128,255 do luatexja.math.is_math_letters[x] = true end}
+
%%------------------ all done
\ltj@plain@AtEnd
\endinput