2.10 Local Definitions: local
(local [definition ] body )
Like letrec, except that the bindings are expressed in the same way as in the top-level or in a module body: using define, define-values, define-syntax, define-struct, etc. Definitions are distinguished from non-definitions by partially expanding definition forms (see Partial Expansion). As in the top-level or in a module body, a begin-wrapped sequence is spliced into the sequence of definitions.