What is not discussed is how SRFI-122 differs from SRFI-25, and why? How is a SRFI-122 interval different from a SRFI-25 shape? Why can't SRFI-122 be a compatible superset of SRFI-25? Why would anyone want to write: ((array-getter a) i j) instead of: (array-ref a i j) -- --Per Bothner xxxxxx@bothner.com http://per.bothner.com/