diff --git a/forms/TogglePanel.php b/forms/TogglePanel.php
index 7b63eef41..b40246b48 100755
--- a/forms/TogglePanel.php
+++ b/forms/TogglePanel.php
@@ -1,5 +1,8 @@
 <?php
 
+/**
+ * Allows visibility of a group of fields to be toggled using + and - icons
+ */
 class TogglePanel extends CompositeField {
 	protected $closed = false;