scmdoc

 1;;> This is the first library
 2(define-library (scmdoc first library)
 3  (export my-id)
 4
 5  (begin
 6    ;;> Some identifier.
 7    (define my-id 1)))
 8
 9;;> This is the second library
10(define-library (scmdoc second library)
11  (export other-id)
12
13  (begin
14    ;;> Other identifier.
15    (define other-id 2)))