[css3-writing-modes] Keyword alternatives to "logical"

By looking at John and Murakami-san's proposals and Håkon's feedback, I would like to propose another alternative to the "logical" keyword:

  margin-top: of-block 1em;

I hope this makes some sense in English, although question remains if:

  margin-left: of-block 1em;

can points to the correct side of the block in LTR/RTL. I can't determine from my English skill, someone's help would be appreciated. But if it does, this same keyword should work in shortcuts like this:

  margin: of-block 1em 2em 3em 4m;

It's just a change in keyword, but being able to use single keyword everywhere could help both authors and browser developers a bit.

To extend this to inside/outside scenario, we could say:

  margin-left: of-recto 1em;

Does this make sense in English? Maybe "in-recto" is the correct preposition, I'm not sure, but I hope you get the idea.


Regards,
Koji