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7.1.1 Lexical structure 7.1.2 External representations 7.1.3 Expressions 7.1.4 Quasiquotations 7.1.5 Transformers 7.1.6 Programs and definitions
This section provides a formal syntax for Scheme written in an extended BNF.
All spaces in the grammar are for legibility. Case is insignificant; for example, `#x1A' and `#X1a' are equivalent. <empty> stands for the empty string.
The following extensions to BNF are used to make the description more concise: <thing>* means zero or more occurrences of <thing>; and <thing>+ means at least one <thing>.
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