2013/7/2, Szelp, A. Sz. <[email protected]>: > The question is, whether the two versions (horizontal and vertical) are > warranted for or not. > With my limited knowledge of the matter, I would believe only one set to be > encodable, the other being free / stylistic variation.
I have examples of printed pages using both forms on the same page non-interchangably, if that helps.

