diff --git a/core/includes/bootstrap.inc b/core/includes/bootstrap.inc
index c9b1c43..10bdc44 100644
--- a/core/includes/bootstrap.inc
+++ b/core/includes/bootstrap.inc
@@ -2640,7 +2640,8 @@ function language_multilingual() {
  *
  * @param $flags
  *   (optional) Specifies the state of the languages that have to be returned.
- *   It can be: Language::STATE_CONFIGURABLE, Language::STATE_LOCKED, Language::STATE_ALL.
+ *   It can be: Language::STATE_CONFIGURABLE, Language::STATE_LOCKED,
+ *   Language::STATE_ALL.
  *
  * @return array
  *   An associative array of languages, keyed by the language code, ordered by
diff --git a/core/includes/language.inc b/core/includes/language.inc
index 896cf69..2b55ee2 100644
--- a/core/includes/language.inc
+++ b/core/includes/language.inc
@@ -539,7 +539,8 @@ function language_fallback_get_candidates($type = Language::TYPE_CONTENT) {
   $fallback_candidates = &drupal_static(__FUNCTION__);
 
   if (!isset($fallback_candidates)) {
-    // Get languages ordered by weight, add Language::LANGCODE_NOT_SPECIFIED at the end.
+    // Get languages ordered by weight, add Language::LANGCODE_NOT_SPECIFIED at
+    // the end.
     $fallback_candidates = array_keys(language_list());
     $fallback_candidates[] = Language::LANGCODE_NOT_SPECIFIED;
 
diff --git a/core/lib/Drupal/Core/Entity/EntityNG.php b/core/lib/Drupal/Core/Entity/EntityNG.php
index 72c2918..edd9c13 100644
--- a/core/lib/Drupal/Core/Entity/EntityNG.php
+++ b/core/lib/Drupal/Core/Entity/EntityNG.php
@@ -37,8 +37,8 @@ class EntityNG extends Entity {
    * The plain data values of the contained fields.
    *
    * This always holds the original, unchanged values of the entity. The values
-   * are keyed by language code, whereas Language::LANGCODE_NOT_SPECIFIED is used for
-   * values in default language.
+   * are keyed by language code, whereas Language::LANGCODE_NOT_SPECIFIED is
+   * used for values in default language.
    *
    * @todo: Add methods for getting original fields and for determining
    * changes.
@@ -134,8 +134,8 @@ public function uuid() {
    * Implements ComplexDataInterface::get().
    */
   public function get($property_name) {
-    // Values in default language are always stored using the Language::LANGCODE_DEFAULT
-    // constant.
+    // Values in default language are always stored using the
+    // Language::LANGCODE_DEFAULT constant.
     if (!isset($this->fields[$property_name][Language::LANGCODE_DEFAULT])) {
       return $this->getTranslatedField($property_name, Language::LANGCODE_DEFAULT);
     }
@@ -279,8 +279,8 @@ public function language() {
    * @return \Drupal\Core\Entity\Field\Type\EntityTranslation
    */
   public function getTranslation($langcode, $strict = TRUE) {
-    // If the default language is Language::LANGCODE_NOT_SPECIFIED, the entity is not
-    // translatable, so we use Language::LANGCODE_DEFAULT.
+    // If the default language is Language::LANGCODE_NOT_SPECIFIED, the entity
+    // is not translatable, so we use Language::LANGCODE_DEFAULT.
     if ($langcode == Language::LANGCODE_DEFAULT || in_array($this->language()->langcode, array(Language::LANGCODE_NOT_SPECIFIED, $langcode))) {
       // No translation needed, return the entity.
       return $this;
diff --git a/core/lib/Drupal/Core/Language/Language.php b/core/lib/Drupal/Core/Language/Language.php
index eae7ca9..434399a 100644
--- a/core/lib/Drupal/Core/Language/Language.php
+++ b/core/lib/Drupal/Core/Language/Language.php
@@ -60,8 +60,8 @@ class Language {
   /**
    * Language code referring to the default language of data, e.g. of an entity.
    *
-   * @todo: Change value to differ from Language::LANGCODE_NOT_SPECIFIED once field API
-   * leverages the property API.
+   * @todo: Change value to differ from Language::LANGCODE_NOT_SPECIFIED once
+   *   field API leverages the property API.
    */
   const LANGCODE_DEFAULT = 'und';
 
diff --git a/core/lib/Drupal/Core/TypedData/TranslatableInterface.php b/core/lib/Drupal/Core/TypedData/TranslatableInterface.php
index d9ff074..b4b07fe 100644
--- a/core/lib/Drupal/Core/TypedData/TranslatableInterface.php
+++ b/core/lib/Drupal/Core/TypedData/TranslatableInterface.php
@@ -40,8 +40,8 @@ public function getTranslationLanguages($include_default = TRUE);
    * AccessibleInterface, the translation object has to implement both as well.
    *
    * @param $langcode
-   *   The language code of the translation to get or Language::LANGCODE_DEFAULT to get
-   *   the data in default language.
+   *   The language code of the translation to get or Language::LANGCODE_DEFAULT
+   *   to get the data in default language.
    * @param $strict
    *   (optional) If the data is complex, whether the translation should include
    *   only translatable properties. If set to FALSE, untranslatable properties
diff --git a/core/modules/field/field.multilingual.inc b/core/modules/field/field.multilingual.inc
index c71c1f1..e48ec03 100644
--- a/core/modules/field/field.multilingual.inc
+++ b/core/modules/field/field.multilingual.inc
@@ -19,11 +19,12 @@
  * @endcode
  * Every field can hold a single or multiple value for each language code
  * belonging to the available language codes set:
- * - For untranslatable fields this set only contains Language::LANGCODE_NOT_SPECIFIED.
+ * - For untranslatable fields this set only contains
+ *   Language::LANGCODE_NOT_SPECIFIED.
  * - For translatable fields this set can contain any language code. By default
  *   it is the list returned by field_content_languages(), which contains all
- *   installed languages with the addition of Language::LANGCODE_NOT_SPECIFIED. This
- *   default can be altered by modules implementing
+ *   installed languages with the addition of Language::LANGCODE_NOT_SPECIFIED.
+ *   This default can be altered by modules implementing
  *   hook_field_available_languages_alter().
  *
  * The available language codes for a particular field are returned by
@@ -110,10 +111,10 @@ function field_language_delete() {
  * Collects the available language codes for the given entity type and field.
  *
  * If the given field has language support enabled, an array of available
- * language codes will be returned, otherwise only Language::LANGCODE_NOT_SPECIFIED will
- * be returned. Since the default value for a 'translatable' entity property is
- * FALSE, we ensure that only entities that are able to handle translations
- * actually get translatable fields.
+ * language codes will be returned, otherwise only
+ * Language::LANGCODE_NOT_SPECIFIED will be returned. Since the default value
+ * for a 'translatable' entity property is FALSE, we ensure that only entities
+ * that are able to handle translations actually get translatable fields.
  *
  * @param $entity_type
  *   The type of the entity the field is attached to, e.g. 'node' or 'user'.
@@ -133,7 +134,8 @@ function field_available_languages($entity_type, $field) {
 
   if (!isset($field_langcodes[$entity_type][$field_name])) {
     // If the field has language support enabled we retrieve an (alterable) list
-    // of enabled languages, otherwise we return just Language::LANGCODE_NOT_SPECIFIED.
+    // of enabled languages, otherwise we return just
+    // Language::LANGCODE_NOT_SPECIFIED.
     if (field_is_translatable($entity_type, $field)) {
       $langcodes = field_content_languages();
       // Let other modules alter the available languages.
@@ -277,8 +279,8 @@ function field_valid_language($langcode, $default = TRUE) {
  * requested language code and the actual data available in the fields
  * themselves.
  * If there is no registered translation handler for the given entity type, the
- * display language code to be used is just Language::LANGCODE_NOT_SPECIFIED, as no other
- * language code is allowed by field_available_languages().
+ * display language code to be used is just Language::LANGCODE_NOT_SPECIFIED, as
+ * no other language code is allowed by field_available_languages().
  *
  * If translation handlers are found, we let modules provide alternative display
  * language codes for fields not having the requested language code available.
diff --git a/core/modules/field/lib/Drupal/field/Plugin/views/field/Field.php b/core/modules/field/lib/Drupal/field/Plugin/views/field/Field.php
index 2de943a..a9085b5 100644
--- a/core/modules/field/lib/Drupal/field/Plugin/views/field/Field.php
+++ b/core/modules/field/lib/Drupal/field/Plugin/views/field/Field.php
@@ -843,10 +843,11 @@ function field_langcode($entity_type, $entity) {
                               array(drupal_container()->get(Language::TYPE_CONTENT)->langcode, $default_langcode),
                               $this->view->display_handler->options['field_language']);
 
-      // Give the Field Language API a chance to fallback to a different language
-      // (or Language::LANGCODE_NOT_SPECIFIED), in case the field has no data for the selected language.
-      // field_view_field() does this as well, but since the returned language code
-      // is used before calling it, the fallback needs to happen explicitly.
+      // Give the Field Language API a chance to fallback to a different
+      // language (or Language::LANGCODE_NOT_SPECIFIED), in case the field has
+      // no data for the selected language. field_view_field() does this as well
+      // but, since the returned language code is used before calling it, the
+      // fallback needs to happen explicitly.
       $langcode = field_language($entity_type, $entity, $this->field_info['field_name'], $langcode);
 
       return $langcode;
diff --git a/core/modules/locale/lib/Drupal/locale/Tests/LocalePathTest.php b/core/modules/locale/lib/Drupal/locale/Tests/LocalePathTest.php
index 4726b3d..359230e 100644
--- a/core/modules/locale/lib/Drupal/locale/Tests/LocalePathTest.php
+++ b/core/modules/locale/lib/Drupal/locale/Tests/LocalePathTest.php
@@ -130,7 +130,8 @@ function testPathLanguageConfiguration() {
     );
     drupal_container()->get('path.crud')->save($edit['source'], $edit['alias'], $edit['langcode']);
 
-    // Assign a custom path alias to second node with Language::LANGCODE_NOT_SPECIFIED.
+    // Assign a custom path alias to second node with
+    // Language::LANGCODE_NOT_SPECIFIED.
     $edit = array(
       'source'   => 'node/' . $second_node->nid,
       'alias'    => $custom_path,
diff --git a/core/modules/locale/locale.bulk.inc b/core/modules/locale/locale.bulk.inc
index 9730413..5a49cbb 100644
--- a/core/modules/locale/locale.bulk.inc
+++ b/core/modules/locale/locale.bulk.inc
@@ -421,8 +421,8 @@ function locale_translate_batch_build($files, $options) {
  *
  * @param object $file
  *   A file object of the gettext file to be imported. The file object must
- *   contain a language parameter (other than Language::LANGCODE_NOT_SPECIFIED). This
- *   is used as the language of the import.
+ *   contain a language parameter (other than Language::LANGCODE_NOT_SPECIFIED).
+ *   This is used as the language of the import.
  *
  * @param array $options
  *   An array with options that can have the following elements:
diff --git a/core/modules/node/node.install b/core/modules/node/node.install
index c4587f4..d352c22 100644
--- a/core/modules/node/node.install
+++ b/core/modules/node/node.install
@@ -1,7 +1,6 @@
-<?
-use Drupal\Core\Language\Language;
+<?php
 
-phpuse Drupal\Core\Language\Language;
+use Drupal\Core\Language\Language;
 
 /**
  * @file
diff --git a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
index ad6c7b0..dd3744b 100644
--- a/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
+++ b/core/modules/simpletest/lib/Drupal/simpletest/WebTestBase.php
@@ -214,9 +214,9 @@ function drupalGetNodeByTitle($title, $reset = FALSE) {
    *   - status: NODE_PUBLISHED.
    *   - sticky: NODE_NOT_STICKY.
    *   - type: 'page'.
-   *   - langcode: Language::LANGCODE_NOT_SPECIFIED. (If a 'langcode' key is provided in
-   *     the array, this language code will also be used for a randomly
-   *     generated body field for that language, and the body for
+   *   - langcode: Language::LANGCODE_NOT_SPECIFIED. (If a 'langcode' key is
+   *     provided in the array, this language code will also be used for a
+   *     randomly generated body field for that language, and the body for
    *     Language::LANGCODE_NOT_SPECIFIED will remain empty.)
    *   - uid: The currently logged in user, or the user running test.
    *   - revision: 1. (Backwards-compatible binary flag indicating whether a
diff --git a/core/modules/system/system.install b/core/modules/system/system.install
index 63c2ade..94d6fa4 100644
--- a/core/modules/system/system.install
+++ b/core/modules/system/system.install
@@ -1610,7 +1610,8 @@ function system_update_8004() {
     // Files can be language-specific (e.g., a scanned document) or not (e.g.,
     // a photograph). For a site being updated, Drupal does not have a way to
     // determine which existing files are language-specific and in what
-    // language. Our best guess is to set all of them to Language::LANGCODE_NOT_SPECIFIED.
+    // language. Our best guess is to set all of them to
+    // Language::LANGCODE_NOT_SPECIFIED.
     $langcode_field['initial'] = Language::LANGCODE_NOT_SPECIFIED;
     db_add_field('file_managed', 'langcode', $langcode_field);
   }
diff --git a/core/modules/system/tests/upgrade/drupal-7.language.database.php b/core/modules/system/tests/upgrade/drupal-7.language.database.php
index 5ecf769..8e1f417 100644
--- a/core/modules/system/tests/upgrade/drupal-7.language.database.php
+++ b/core/modules/system/tests/upgrade/drupal-7.language.database.php
@@ -422,10 +422,10 @@
 
 // Add sample nodes to test language assignment and translation functionality.
 // The first node is also used for testing comment language functionality. This
-// is a simple node with Language::LANGCODE_NOT_SPECIFIED as language code. The second
-// node is a Catalan node (language code 'ca'). The third and fourth node are a
-// translation set with an English source translation (language code 'en') and
-// a Chuvash translation (language code 'cv').
+// is a simple node with Language::LANGCODE_NOT_SPECIFIED as language code. The
+// second node is a Catalan node (language code 'ca'). The third and fourth node
+// are a translation set with an English source translation (language code 'en')
+// and a Chuvash translation (language code 'cv').
 db_insert('node')->fields(array(
   'nid',
   'vid',
diff --git a/core/modules/translation_entity/translation_entity.admin.inc b/core/modules/translation_entity/translation_entity.admin.inc
index f29e351..bfe0982 100644
--- a/core/modules/translation_entity/translation_entity.admin.inc
+++ b/core/modules/translation_entity/translation_entity.admin.inc
@@ -153,10 +153,10 @@ function _translation_entity_update_field_translatability($settings) {
     $field = field_info_field($field_name);
     if ($field['translatable'] != $translatable) {
       // If a field is untranslatable, it can have no data except under
-      // Language::LANGCODE_NOT_SPECIFIED. Thus we need a field to be translatable before
-      // we convert data to the entity language. Conversely we need to switch
-      // data back to Language::LANGCODE_NOT_SPECIFIED before making a field
-      // untranslatable lest we lose information.
+      // Language::LANGCODE_NOT_SPECIFIED. Thus we need a field to be
+      // translatable before we convert data to the entity language. Conversely
+      // we need to switch data back to Language::LANGCODE_NOT_SPECIFIED before
+      // making a field untranslatable lest we lose information.
       $field_operations = array(
         array('translation_entity_translatable_switch', array($translatable, $field_name)),
       );
@@ -364,8 +364,8 @@ function translation_entity_translatable_batch($translatable, $field_name, &$con
       // old translations might occur before the new ones are stored.
       if ($translatable && isset($entity->{$field_name}[Language::LANGCODE_NOT_SPECIFIED])) {
         // If the field is being switched to translatable and has data for
-        // Language::LANGCODE_NOT_SPECIFIED then we need to move the data to the right
-        // language.
+        // Language::LANGCODE_NOT_SPECIFIED then we need to move the data to the
+        // right language.
         $entity->{$field_name}[$langcode] = $entity->{$field_name}[Language::LANGCODE_NOT_SPECIFIED];
         // Store the original value.
         _translation_entity_update_field($entity_type, $entity, $field_name);
@@ -375,8 +375,8 @@ function translation_entity_translatable_batch($translatable, $field_name, &$con
       }
       elseif (!$translatable && isset($entity->{$field_name}[$langcode])) {
         // The field has been marked untranslatable and has data in the entity
-        // language: we need to move it to Language::LANGCODE_NOT_SPECIFIED and drop the
-        // other translations.
+        // language: we need to move it to Language::LANGCODE_NOT_SPECIFIED and
+        // drop the other translations.
         $entity->{$field_name}[Language::LANGCODE_NOT_SPECIFIED] = $entity->{$field_name}[$langcode];
         // Store the original value.
         _translation_entity_update_field($entity_type, $entity, $field_name);
diff --git a/core/modules/views/views.module b/core/modules/views/views.module
index d8c4525..435677b 100644
--- a/core/modules/views/views.module
+++ b/core/modules/views/views.module
@@ -816,7 +816,8 @@ function views_add_contextual_links(&$render_element, $location, ViewExecutable
  *   array.
  * @param int $flags
  *   (optional) Specifies the state of the languages that have to be returned.
- *   It can be: Language::STATE_CONFIGURABLE, Language::STATE_LOCKED, Language::STATE_ALL.
+ *   It can be: Language::STATE_CONFIGURABLE, Language::STATE_LOCKED,
+ *   Language::STATE_ALL.
  *
  * @return array
  *   An array of language names (or $field) keyed by the langcode.