This came up in the process of debugging something that turned out to not be an imposer issue - we have the the ISO standard B series already, but there's a second B series standard from JIS that is used fairly commonly in East Asia. https://en.wikipedia.org/wiki/Paper_size#Japanese_B-series_variant has the numbers - they will need to be converted to point values to match the rest of our constants.
This came up in the process of debugging something that turned out to not be an imposer issue - we have the the ISO standard B series already, but there's a second B series standard from JIS that is used fairly commonly in East Asia. https://en.wikipedia.org/wiki/Paper_size#Japanese_B-series_variant has the numbers - they will need to be converted to point values to match the rest of our constants.