Explain the purpose of the Racket files

course_mapping.rkt

@@ -1,5 +1,11 @@
 #! /usr/bin/racket
 #lang racket
+; This file is used to generate the mapping for elasticsearch
+; It is written in Racket (a dialect of Scheme)
+; It will not be necessary to run unless you want to change the elasticsearch mapping
+; This may be necessary if you have fields you want to add, or need some other customization
+; You may also edit the JSON mapping directly, or use whatever tool you want to edit the mapping with
+
 (require "schemadsl.rkt")
 
 (displayln

schemadsl.rkt

@@ -1,5 +1,6 @@
 #lang racket
-
+; This file is used to generate the elasticsearch mapping
+; It is written in Racket (a dialect of Scheme)
 (require json)
 
 (define (root name type)