diff --git a/etc/MiniGUI.cfg b/etc/MiniGUI.cfg
index 36089e80..bfb1d463 100644
--- a/etc/MiniGUI.cfg
+++ b/etc/MiniGUI.cfg
@@ -1,6 +1,6 @@
-# This configuration file is for MiniGUI V4.0.x or later
+# This configuration file is for MiniGUI V4.2.x or later
 #
-# Copyright (C) 2002~2019 FMSoft
+# Copyright (C) 2002~2020 FMSoft
 # Copyright (C) 1998~2002 Wei Yongming.
 #
 # Web: http://www.minigui.com
@@ -36,6 +36,19 @@ mtype=IMPS2
 # Linux IAL engine based on libinput
 # ial_engine=libinut
 
+#{{ifdef _MGUSE_COMPOSITING
+# Options for compositing schema
+[compositing_schema]
+# The size of wallpaper pattern surface (the fake screen for clients).
+# Optional values: <w>x<h>, full, half, quarter, octant, and empty.
+wallpaper_pattern_size=full
+# wallpaper_pattern_size=half
+# wallpaper_pattern_size=quarter
+# wallpaper_pattern_size=octant
+# wallpaper_pattern_size=empty
+# wallpaper_pattern_size=32x32
+#}}
+
 #{{ifdef _MGGAL_DRM
 [drm]
 defaultmode=1024x768-32bpp