diff --git a/src/Core/Configure/ConfigEngineInterface.php b/src/Core/Configure/ConfigEngineInterface.php
index 710c1fc7df1..188c0b9ad29 100644
--- a/src/Core/Configure/ConfigEngineInterface.php
+++ b/src/Core/Configure/ConfigEngineInterface.php
@@ -21,7 +21,9 @@ interface ConfigEngineInterface
 {
 
     /**
-     * Read method is used for reading configuration information from sources.
+     * Read a configuration file/storage key
+     *
+     * This method is used for reading configuration information from sources.
      * These sources can either be static resources like files, or dynamic ones like
      * a database, or other datasource.
      *
@@ -31,7 +33,7 @@ interface ConfigEngineInterface
     public function read($key);
 
     /**
-     * Dumps the configure data into source.
+     * Dumps the configure data into the storage key/file of the given `$key`.
      *
      * @param string $key The identifier to write to.
      * @param array $data The data to dump.
diff --git a/src/Core/Configure/Engine/IniConfig.php b/src/Core/Configure/Engine/IniConfig.php
index 7ae60f5dae4..66379c91d37 100644
--- a/src/Core/Configure/Engine/IniConfig.php
+++ b/src/Core/Configure/Engine/IniConfig.php
@@ -42,7 +42,7 @@
  *
  * `Configure::read('section.key');
  *
- * You can combine `.` separated values with sections to create more deeply
+ * You can also use `.` separated values in section names to create more deeply
  * nested structures.
  *
  * IniConfig also manipulates how the special ini values of
diff --git a/src/Core/Configure/Engine/JsonConfig.php b/src/Core/Configure/Engine/JsonConfig.php
index 5ceec6e304e..b454347933c 100644
--- a/src/Core/Configure/Engine/JsonConfig.php
+++ b/src/Core/Configure/Engine/JsonConfig.php
@@ -21,6 +21,20 @@
 /**
  * JSON engine allows Configure to load configuration values from
  * files containing JSON strings.
+ *
+ * An example JSON file would look like::
+ *
+ * ```
+ * {
+ *     "debug": false,
+ *     "App": {
+ *         "namespace": "MyApp"
+ *     },
+ *     "Security": {
+ *         "salt": "its-secret"
+ *     }
+ * }
+ * ```
  */
 class JsonConfig implements ConfigEngineInterface
 {
diff --git a/src/Core/Configure/Engine/PhpConfig.php b/src/Core/Configure/Engine/PhpConfig.php
index 85db8036962..9f4fc2d5e05 100644
--- a/src/Core/Configure/Engine/PhpConfig.php
+++ b/src/Core/Configure/Engine/PhpConfig.php
@@ -24,6 +24,23 @@
  *
  * Files compatible with PhpConfig should return an array that
  * contains all of the configuration data contained in the file.
+ *
+ * An example configuration file would look like::
+ *
+ * ```
+ * <?php
+ * return [
+ *     'debug' => 0,
+ *     'Security' => [
+ *         'salt' => 'its-secret'
+ *     ],
+ *     'App' => [
+ *         'namespace' => 'App'
+ *     ]
+ * ];
+ * ```
+ *
+ * @see Cake\Core\Configure::load() for how to load custom configuration files.
  */
 class PhpConfig implements ConfigEngineInterface
 {