diff --git a/scribblings/roos.scrbl b/scribblings/roos.scrbl
index c059245..01f01d7 100644
--- a/scribblings/roos.scrbl
+++ b/scribblings/roos.scrbl
@@ -57,6 +57,8 @@ Methods and fields are always virtual. Superclass definitions are resolved based
  @item{@racket[(roos-id! obj id)] — set object's ID (used in persistence).}
 ]
 
+@subsection{Provided procedures}
+
 @defproc[(-> [obj any/c] [name symbol?] ...) any/c]{
 Invoke a getter, setter, or method on ROOS object @racket[obj] using name and arguments.
 }
@@ -119,7 +121,6 @@ Registers the storage backend for persistent attributes. This must be set before
 Globally disables or enables deletion via the registered deleter procedure. Useful when shutting down.
 }
 
-
 @section{Persistence and Storage Backend}
 
 ROOS lets you persist selected attributes by tagging them with @racket[persist]. Persistence is handled by user-provided backends through:
@@ -147,9 +148,9 @@ Below is an example SQLite backend implementation that stores fields in a table:
 (require db)
 (require racket/vector)
 
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Conversion of field values
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+@;{;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;}
+@;{;; Conversion of field values}
+@;{;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;}
 
 (define (value->string s-expr)
   (let ((o (open-output-string)))
@@ -160,9 +161,9 @@ Below is an example SQLite backend implementation that stores fields in a table:
   (let ((o (open-input-string str)))
     (read o)))
 
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Database storage backend
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+@;{;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;}
+@;{;; Database storage backend}
+@;{;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;}
 
 (define conn (sqlite3-connect #:database "roos.db" #:mode 'create))
 (query-exec conn "CREATE TABLE IF NOT EXISTS store (class TEXT, id TEXT, field TEXT, val TEXT)")
@@ -253,7 +254,7 @@ This example builds an address book with persistent reference to persons, using
   )
    
    
-;; Create sample data
+@;{;; Create sample data}
 (define b (-! book))
 
 (define (adder n t)
@@ -269,7 +270,7 @@ This example builds an address book with persistent reference to persons, using
 
 (-> b (for-each (lambda (p) (displayln (-> p name)))))
 
-;; Reopen addressbook later from persistent storage
+@{;; Reopen addressbook later from persistent storage}
 (define a (-! book))
 (-> b (for-each (lambda (p) (displayln (-> p name)))))