Hi, In current draft of UTR#50, the properties for Canadian aboriginal syllabics are defined as "U; S; S;". But seeing the PDFs like http://www.gov.nu.ca/save10/English/Documents/Newsletters/Newsletter%203/Newsletter%203%20-%20Inuktitut.pdf http://www.cley.gov.nu.ca/pdf/Documentary%20Art%20Project_Inuk.pdf it is questionable if the default value "U" is preferred.
I cannot exclude the possibility that this rotated text is forced by the limitation of printing software, but, the tuning of the positions for the small glyphs for glottal stop and final sounds (U+141C - U+142A, U+14D0 - U+14D2, etc etc) should be discussed if "U" is preferred value. Does anybody have "manually written" Canadian aboriginal syllabics in vertical writing mode? Regards, mpsuzuki