diff --git a/.gitmodules b/.gitmodules
index d361786..87babf1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -43,3 +43,6 @@
 [submodule "docu/system"]
 	path = docu/system
 	url = ../docu_system.git
+[submodule "docu/system_wiki"]
+	path = docu/system_wiki
+	url = ../system.wiki.git
diff --git a/docu/system_wiki b/docu/system_wiki
new file mode 160000
index 0000000..e15bada
--- /dev/null
+++ b/docu/system_wiki
@@ -0,0 +1 @@
+Subproject commit e15bada4ee925c7ef5cffe8ae37cc615f8f28d7e