diff --git a/Home.md b/Home.md
index 279dc28..45a0411 100644
--- a/Home.md
+++ b/Home.md
@@ -29,11 +29,11 @@ We call these documents "MiniGUI Supplementary Documents".
 
 ## Supplementaries
 
-* [Using CommLCD NEWGAL Engine and Comm IAL Engine]() - How to define external
-    stubs to implement your CommLCD engine and Comm IAL engine outside MiniGUI
-    Core.
-* [Using Images and Fonts on System without File System]() - How to build source
-    for incore images and fonts, and load them for your MiniGUI apps.
+* [Using CommLCD NEWGAL Engine and Comm IAL Engine](https://github.com/VincentWei/minigui/wiki/Comm-Engines) -
+    How to define external stubs to implement your CommLCD engine and Comm IAL engine
+    outside MiniGUI Core.
+* [Using Images and Fonts on System without File System]() -
+    How to build source for incore images and fonts, and load them for your MiniGUI apps.
 * [Layout, Shape, and Render Text in Complex/Mixed Scripts]() - How to layout,
     shape, and render text in complex or mixed scripts.