diff --git a/modules/system/system.api.php b/modules/system/system.api.php
index c2a613e..12b7e97 100644
--- a/modules/system/system.api.php
+++ b/modules/system/system.api.php
@@ -948,7 +948,9 @@ function hook_menu_get_item_alter(&$router_item, $path, $original_map) {
  * integers. That is, the integer 0 in an argument list will be replaced with
  * the first path component, integer 1 with the second, and so on (path
  * components are numbered starting from zero). This substitution feature allows
- * you to re-use a callback function for several different paths. For example:
+ * you to re-use a callback function for several different paths. To pass an 
+ * integer without it being replaced with its respective path component, use the
+ * string value of the integer (e.g., '1') as the argument value. For example:
  * @code
  *   function mymodule_menu() {
  *     $items['abc/def'] = array(