TODO: list of features, table of RxRS features (??), etc R7RS Compliance Section | Status | Comments ------- | ------ | --------- 2.2 Whitespace and comments | | 2.3 Other notations | | 2.4 Datum labels | | 3.1 Variables, syntactic keywords, and regions | | 3.2 Disjointness of types | | 3.3 External representations | | 3.4 Storage model | | 3.5 Proper tail recursion | | 4.1 Primitive expression types | | 4.2 Derived expression types | | 4.3 Macros | | 5.1 Programs | | 5.2 Import declarations | | 5.3 Variable definitions | | 5.4 Syntax definitions | | 5.5 Record-type definitions | | 5.6 Libraries | | 5.7 The REPL | | 6.1 Equivalence predicates | | 6.2 Numbers | | 6.3 Booleans | | 6.4 Pairs and lists | | 6.5 Symbols | | 6.6 Characters | | 6.7 Strings | | 6.8 Vectors | | 6.9 Bytevectors | | 6.10 Control features | | 6.11 Exceptions | | 6.12 Environments and evaluation | | 6.13 Input and output | | 6.14 System interface | |