 Version 2.0 was finalized in 2005 and addressed the item (that is, the individual question) level of the specification only.A draft version of Version 2.1, which covered the structure of tests and results, was also released in 2005.But because Version 2.0 did not address test-level issues and was not compatible with Version 1, and because 2.1 was still under development, adoption of Version 2 was retarded.