--- css.module	2010-10-14 16:18:51.058367526 +0000
+++ css-new.module	2010-10-14 16:21:21.122919217 +0000
@@ -231,3 +231,16 @@ function css_sanitize($css, $type = 'vie
   
   return $css;
 }
+
+
+/**
+ * Implementation of hook_content_extra_fields().
+ */
+function css_content_extra_fields($type_name) {
+  $extra['css'] = array(
+    'label' => t('CSS Rules'),
+    'description' => t('Per-node CSS field.'),
+    'weight' => 0,
+  );
+  return $extra;
+}