[XeTeX] fontspec and vertical writing with ICU layout

[Jjgod Jiang]

Hi Will,

2007/3/6, caapv 208 <caapv208 at yahoo.co.jp>:
> But how can I typeset vertical text with fontspec.
> I have tried the RawFeature, but only the second example
> works:

I have the same question about font spec too, in fontspec.pdf
page 59: