diff --git a/Contrib/Modern UI/Readme.html b/Contrib/Modern UI/Readme.html
index 95c77cb3..aa10b281 100644
--- a/Contrib/Modern UI/Readme.html	
+++ b/Contrib/Modern UI/Readme.html	
@@ -459,7 +459,7 @@ MUI_CUSTOMFUNCTION_UNGUIINIT
 <p class="text">
 <span class="bold">Welcome Page</span><br>
 MUI_CUSTOMFUNCTION_WELCOME_PRE<br>
-MUI_CUSTOMFUNCTION_WELCOME_SHOW
+MUI_CUSTOMFUNCTION_WELCOME_SHOW - ${MUI_TEMP1} contains HWND of Welcome dialog
 </p>
 <p class="text">
 <span class="bold">License Page</span><br>
@@ -492,7 +492,7 @@ MUI_CUSTOMFUNCTION_INSTFILES_LEAVE
 <p class="text">
 <span class="bold">Finish Page</span><br>
 MUI_CUSTOMFUNCTION_FINISH_PRE<br>
-MUI_CUSTOMFUNCTION_FINISH_SHOW
+MUI_CUSTOMFUNCTION_FINISH_SHOW - ${MUI_TEMP1} contains HWND of Finish dialog
 </p>
 </p>
 <p class="text">