12 Accumulators

1	Prologue: How to Program
2	Fixed-Size Data
3	Intermezzo: BSL
4	Arbitrarily Large Data
5	Intermezzo: Quote, Unquote
6	Abstraction
7	Intermezzo: Scope
8	Intertwined Data
9	Intermezzo: Pattern Matching
10	Generative Recursion
11	Intermezzo: Vectors
12	Accumulators
13	Epilogue