3.1.3 Lambda Expressions

In a lambda expression, the body is evaluated in a lexical environment that is formed by adding the binding of each parameter in the lambda list with the corresponding value from the arguments to the current lexical environment.

For further discussion of how bindings are established based on the lambda list, see Section 3.4 (Lambda Lists).

The body of a lambda expression is an implicit progn; the values it returns are returned by the lambda expression.