Hi all, I've just observed that a small part of the concept check documentation is out of sync with the current implementation. The page "Implementation" still uses the deprecated way of defining and checking concepts: http://www.boost.org/doc/libs/1_35_0/libs/concept_check/implementation.htm The rest of the pages seem to be up to date. Another small thing I noticed is that the page "Using Concept Checks" has the "Prev" and "Next" links at the bottom of the page switched compared to the other pages. http://www.boost.org/doc/libs/1_35_0/libs/concept_check/using_concept_check.... Best regards, Kimon