diff --git a/src/generator.lisp b/src/generator.lisp
index 4e55e37..2a0f5dd 100644
--- a/src/generator.lisp
+++ b/src/generator.lisp
@@ -7,7 +7,7 @@
            #:elem-str))
 (in-package #:piccolo/generator)
 
-;;; print-object
+;;; groups of specific tags and attributes
 
 (defun symbols-hash-table (symbols)
   (let ((ht (make-hash-table)))
@@ -32,6 +32,8 @@
   area base br col embed hr img input keygen
   link meta param source track wbr)
 
+;;; print-object
+
 (defparameter *expand-user-element* t)
 
 (defmethod print-object ((attrs elm:attrs) stream)