diff --git a/core/lib/Drupal/Core/ParamConverter/ParamConverterInterface.php b/core/lib/Drupal/Core/ParamConverter/ParamConverterInterface.php
index 86ed0b6..9ca00fa 100644
--- a/core/lib/Drupal/Core/ParamConverter/ParamConverterInterface.php
+++ b/core/lib/Drupal/Core/ParamConverter/ParamConverterInterface.php
@@ -12,13 +12,22 @@
 /**
  * Interface for parameter converters.
  *
- * A ParamConverter is responsible for converting a route parameter
- * to a classsed object.
+ * Classes implementing this interface are responsible for converting a path
+ * parameter to the object it represents.
+ *
+ * Here is an example path:
+ * @code
+ * /admin/structure/block/manage/{block}
+ * @endcode
+ * In this case, 'block' would be the path parameter which should be turned into
+ * the block in question for administration.
+ *
+ * @see menu
  */
 interface ParamConverterInterface {
 
   /**
-   * Allows to convert variables to their corresponding objects.
+   * Convert path variables to their corresponding objects.
    *
    * @param mixed $value
    *   The raw value.
@@ -35,7 +44,7 @@
   public function convert($value, $definition, $name, array $defaults);
 
   /**
-   * Determines if the converter applies to a specific route and variable.
+   * Determine if the converter applies to a specific route and variable.
    *
    * @param mixed $definition
    *   The parameter definition provided in the route options.