id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
11619	Chrono V2 IO - format tags 'unsupported'?	steve.hickman@…	viboes	"http://www.boost.org/doc/libs/1_59_0/doc/html/chrono/reference.html#chrono.reference.io.ios_state_hpp.sag.set_time_fmt 

table 6.3 on the page linked above describes format tags to be used with IO. Several are listed as unsupported. There is no explanation of what 'unsupported' means. Does it mean a format string with one of those tags will cause an exception? Will the format tag be ignored? Will the entire format string fail to work? Will interation over the string stop before or after the 'unsupported' tag? More explanation would be helpful here."	Support Requests	assigned	To Be Determined	chrono	Boost 1.59.0	Not Applicable