Forum ate my reply...
#1 Yes/No here is for POSIX compliance. I don't see it going much beyond "You're about to post to the CLDR Forum. Proceed? (Lawn/Na)".
See
http://cldr.unicode.org/translation/misc#TOC-Yes-No and
http://www.unicode.org/reports/tr35/#POSIX_Elements#2 If it's not there, it's due to lack of vetter participation. IF you'd like to consider helping out see
http://cldr.unicode.org/index/survey-tool/accounts and
http://www.unicode.org/reports/tr35/#POSIX_Elements-Steven