Changelog The CSL 1.0 specification update of 2010-05-30 includes the following changes: clarified behavior of the line-spacing and entry-spacing attributes [diff] clarified behavior of the position condition when used for bibliography formatting [diff] clarified behavior of the et-al-subsequent attributes [diff] changed the handling of name suffixes (now aligns with Chicago Manual of Style) [diff] changed et-al abbreviation to use a