diff --git a/core/modules/rdf/.rdf.module.swo b/core/modules/rdf/.rdf.module.swo
new file mode 100644
index 0000000..da63230
Binary files /dev/null and b/core/modules/rdf/.rdf.module.swo differ
diff --git a/core/modules/rdf/.rdf.module.swp b/core/modules/rdf/.rdf.module.swp
new file mode 100644
index 0000000..7a78caf
Binary files /dev/null and b/core/modules/rdf/.rdf.module.swp differ
diff --git a/core/modules/rdf/rdf.module b/core/modules/rdf/rdf.module
index e79110e..5618812 100644
--- a/core/modules/rdf/rdf.module
+++ b/core/modules/rdf/rdf.module
@@ -77,7 +77,7 @@ const RDF_DEFAULT_BUNDLE = '';
  * Implements hook_rdf_namespaces().
  *
  * @return array
- *   Supported RDF namespaces.
+ *   An associative array of namespaces.
  */
 function rdf_rdf_namespaces() {
   return array(
@@ -99,8 +99,7 @@ function rdf_rdf_namespaces() {
  * Invokes hook_rdf_namespaces() and collects RDF namespaces from modules that
  * implement it.
  *
- * @return array
- *   Array of RDF namespaces.
+ * @return $rdf_namepaces
  */
 function rdf_get_namespaces() {
   $rdf_namespaces = module_invoke_all('rdf_namespaces');
@@ -129,9 +128,9 @@ function rdf_get_namespaces() {
 /**
  * Returns the mapping for attributes of a given entity type/bundle pair.
  *
- * @param string $type
+ * @param $type
  *   An entity type.
- * @param string $bundle
+ * @param $bundle
  *   (optional) A bundle name.
  *
  * @return array
@@ -158,7 +157,7 @@ function rdf_mapping_load($type, $bundle = RDF_DEFAULT_BUNDLE) {
 /**
  * Gets the default RDF mapping for a given entity type.
  *
- * @param string $type
+ * @param $type
  *   An entity type, e.g. 'node' or 'comment'.
  *
  * @return array
@@ -189,9 +188,9 @@ function _rdf_get_default_mapping($type) {
 /**
  * Retrieves an RDF mapping from the database.
  *
- * @param string $type
+ * @param $type
  *   The entity type the mapping refers to.
- * @param string $bundle
+ * @param $bundle
  *   The bundle the mapping refers to.
  *
  * @return array
@@ -224,10 +223,10 @@ function _rdf_mapping_load($type, $bundle) {
  * type/bundle pair. If available, adds default values for non-existent mapping
  * keys.
  *
- * @param array $mapping
+ * @param $mapping
  *   The RDF mapping to save.
  *
- * @return MergeQuery
+ * @return $status
  *   MergeQuery object that indicates the outcome of the operation.
  */
 function rdf_mapping_save($mapping) {
@@ -254,9 +253,9 @@ function rdf_mapping_save($mapping) {
 /**
  * Deletes the mapping for the given bundle from the database.
  *
- * @param string $type
+ * @param $type
  *   The entity type the mapping refers to.
- * @param string $bundle
+ * @param $bundle
  *   The bundle the mapping refers to.
  *
  * @return bool
@@ -822,7 +821,7 @@ function rdf_preprocess_image(&$variables) {
  *   drupal_attributes($rdf_template_variable_attributes_array[$variable_name])
  * @endcode
  *
- * @param array $variables
+ * @param $variables
  *   An associative array containing:
  *   - content: A string of content to be wrapped with attributes.
  *   - attributes: An array of attributes to be placed on the wrapping element.
diff --git a/core/modules/rdf/rdf.test b/core/modules/rdf/rdf.test
index 1344ded..563b87d 100644
--- a/core/modules/rdf/rdf.test
+++ b/core/modules/rdf/rdf.test
@@ -5,6 +5,10 @@
  * Tests for rdf.module.
  */
 
+
+/**
+ * Represents a prepared statement
+ */
 class RdfMappingHookTestCase extends DrupalWebTestCase {
   public static function getInfo() {
     return array(