How can I make definitions-area examples using the HtDP languages in Scribble?
I tried the following, but since the evaluator corresponds to the
interactions-area, it complains about definitions not being allowed:
#lang scribble/manual
@(require racket/sandbox scribble/example)
@title{Notes}
@(define my-evaluator
(parameterize ([sandbox-output 'string]
[sandbox-error-output 'string])
(make-evaluator '(lib "lang/htdp-beginner.ss"))))
@examples[
#:no-prompt
#:eval my-evaluator
(define (distance x y) (sqrt (+ (sqr x) (sqr y))))
(distance (distance 3 4) 5)]
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