1 This Mini-Scheme Interpreter is based on "SCHEME Interpreter in
2 Common Lisp" in Appendix of T.Matsuda & K.Saigo, Programming of LISP,
3 archive No5 (1987) p6 - p42 (published in Japan).
5 Supported features (or, NOT supported features :-)
6 1) Lists, symbols, strings.
7 However, strings have very limited capability.
8 For instance, there is *NO* string-ref, string-set!, ... etc.
9 2) Numbers are limited to FIXNUM only.
10 There is *NO* complex, real, rational and even bignum.
11 3) Macro feature is supported, though not the one defined in R4RS.
14 1) Poor error recovery from illegal use of syntax and procedure.
15 2) Certain procedures do not check its argument type.