include

(include "file"...)

Reads each file and puts its contents where the include stands, as a begin: at the top level its definitions are the program's own, at the head of a body they are internal definitions. A relative file name is relative to the directory of the file the include is written in, and at the REPL to the working directory. The files are read when the program is, so a compiled program carries their contents and reads nothing at run time. A file including itself is refused, and so is an include a macro expands into.

; file: greet.scm
(define (greet name) (string-append "hello, " name))

hello, world