Proposed Update UTR #50, Unicode Vertical Text Layout

UTR #50, Unicode Vertical Text Layout, is being reissued with minor updates to the text and with a set of data updated to the character repertoire of Unicode Version 7.0. For details on the proposed changes in the data, please refer to the Modifications section in the UTR.

For information about how to discuss this Public Review Issue and how to supply formal feedback, please see the review page http://www.unicode.org/review/pri278/.