diff --git a/core/includes/form.inc b/core/includes/form.inc
index 6956f04..752f6d6 100644
--- a/core/includes/form.inc
+++ b/core/includes/form.inc
@@ -3872,6 +3872,8 @@ function theme_vertical_tabs($variables) {
  *   array_shift($args);
  *   array_shift($args);
  *   // We store the user's original input in $keywords, including any slashes.
+ *   // Note: A prepended slash will be removed. i.e. If the user enters
+ *   // '/keywords/' then $keywords will contain 'keywords'.
  *   $keywords = implode('/', $args);
  *
  *   // Your code here.