Re: [css3-text-layout] New editor's draft - margin-before/after/start/end etc.

> That's why I think it's important to try and understand the full scope
> of how vertical text affects CSS, to simply list existing properties
> and how they might be affected. Doesn't need to be a PhD thesis, just
> a simple methodical analysis that covers CSS 2.1 and additions
> proposed for CSS3.

This makes a lot of sense.  I am now thiking about two things to do.

A)   "principal writing direction"

The first one is clarifiation of "principal writing direction".  It is 
introduced by the W3C note, but its impact on user interfaces, 
authoring, and users have to be further clarified.  I believe that 
this clarification is an important preparation step for providing 
stylesheets applicable to both horizontal and vertical writing.  

B) List of CSS properties that might be affected

The second is what you suggested, namely, a list of CSS 
properties that might be affected by vertical writing.

I will be out of office next week, but I will try to do these 
two things by the end of this month.  Those who are willing 
to contribute to either A) or B) might want to e-mail me.  
I already have some text (in Japanese) about A).

Cheers,
Makoto