diff --git a/content/treestyletab/windowHelperHacks.js b/content/treestyletab/windowHelperHacks.js
index 9dc2503b..430b2fe5 100644
--- a/content/treestyletab/windowHelperHacks.js
+++ b/content/treestyletab/windowHelperHacks.js
@@ -205,6 +205,7 @@ TreeStyleTabWindowHelper.overrideExtensionsAfterBrowserInit = function TSTWH_ove
 
 	// Selection Links
 	// https://addons.mozilla.org/firefox/addon/selection-links/
+	// open selection links as child tabs
 	if ('selectionlinks' in window &&
 		'parseSelection' in selectionlinks &&
 		TreeStyleTabUtils.getTreePref('compatibility.SelectionLinks') &&