This site is a static rendering of the Trac instance that was used by R7RS-WG1 for its work on R7RS-small (PDF), which was ratified in 2013. For more information, see Home. For a version of this page that may be more recent, see SearchCowan in WG2's repo for R7RS-large.
This was a small WG2 proposal for Scheme procedures corresponding to the Common Lisp function SEARCH. Vector-contains and list-contains have been flushed as unnecessary.