Documentation: http://people.csail.mit.edu/jaffer/slib/Rev2-Procedures.html#Rev2-Procedures

To use: (import (slib rev2-procedures))

Note: append! is in (srfi 1), so not included here. Neither are "1+" and "-1+".

For more information including compatibility, examples and test cases, see https://github.com/petercrlane/r7rs-libs