1 files changed, 9 insertions, 8 deletions
diff --git a/sc4opt.scm b/sc4opt.scm
index 8e92237..156ab92 100644
--- a/sc4opt.scm
+++ b/sc4opt.scm
@@ -8,7 +8,7 @@
 ;1.  Any copy made of this software must include this copyright notice
 ;in full.
 ;
-;2.  I have made no warrantee or representation that the operation of
+;2.  I have made no warranty or representation that the operation of
 ;this software will be error-free, and I am under no obligation to
 ;provide any services, by way of maintenance, update, or otherwise.
 ;
@@ -23,30 +23,31 @@
 ;;; This code conforms to: William Clinger and Jonathan Rees, editors.
 ;;; Revised^4 Report on the Algorithmic Language Scheme.
 
+;@
 (define (list-tail l p)
   (if (< p 1) l (list-tail (cdr l) (- p 1))))
-
+;@
 (define (string->list s)
   (do ((i (- (string-length s) 1) (- i 1))
        (l '() (cons (string-ref s i) l)))
       ((< i 0) l)))
-
+;@
 (define (list->string l) (apply string l))
-
+;@
 (define string-copy string-append)
-
+;@
 (define (string-fill! s obj)
   (do ((i (- (string-length s) 1) (- i 1)))
       ((< i 0))
       (string-set! s i obj)))
-
+;@
 (define (list->vector l) (apply vector l))
-
+;@
 (define (vector->list s)
   (do ((i (- (vector-length s) 1) (- i 1))
        (l '() (cons (vector-ref s i) l)))
       ((< i 0) l)))
-
+;@
 (define (vector-fill! s obj)
   (do ((i (- (vector-length s) 1) (- i 1)))
       ((< i 0))