bug#41126: [PATCH] doc: Added very minimal doc strings to (srfi srfi-9 gnu).

* module/srfi/srfi-9/gnu.scm: Added some doc strings.
---
 module/srfi/srfi-9/gnu.scm | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/module/srfi/srfi-9/gnu.scm b/module/srfi/srfi-9/gnu.scm
index 219bcdebb..0b9024e75 100644
--- a/module/srfi/srfi-9/gnu.scm
+++ b/module/srfi/srfi-9/gnu.scm
@@ -31,19 +31,25 @@
             set-fields))
 
 (define (set-record-type-printer! type proc)
-  "Set PROC as the custom printer for TYPE."
+  "- Scheme Procedure: set-record-type-printer! TYPE PROC
+     Set PROC as the custom printer for TYPE."
   (struct-set! type vtable-index-printer proc))
 
 (define-syntax-rule (define-immutable-record-type name ctor pred fields ...)
+  "- Scheme Procedure: define-immutable-record-type NAME CTOR PRED (FIELD GETTER [SETTER]) ..."
   ((@@ (srfi srfi-9) %define-record-type)
    #t (define-immutable-record-type name ctor pred fields ...)
    name ctor pred fields ...))
 
 (define-syntax-rule (set-field s (getter ...) expr)
+  "- Scheme Procedure: set-field RECORD (GETTER ...) EXPR
+      Set the field in RECORD with the GETTER, to the value of EXPR."
   (%set-fields #t (set-field s (getter ...) expr) ()
                s ((getter ...) expr)))
 
 (define-syntax-rule (set-fields s . rest)
+  "- Scheme Procedure: set-fields RECORD ((GETTER ...) EXPR) ...
+     Set the fields in the RECORD with the given GETTERs to the corresponding EXPRessions."
   (%set-fields #t (set-fields s . rest) ()
                s . rest))
 
-- 
2.20.1