diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..f882dfa
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,9 @@
+[submodule "OCORE"]
+	path = OCORE
+	url = https://git.processweb.de/Stefan/OCORE.git
+[submodule "OCORE_web"]
+	path = OCORE_web
+	url = https://git.processweb.de/Stefan/OCORE_web.git
+[submodule "OCORE_web_pdf"]
+	path = OCORE_web_pdf
+	url = https://git.processweb.de/Stefan/OCORE_web_pdf.git
diff --git a/OCORE b/OCORE
new file mode 160000
index 0000000..c7254dd
--- /dev/null
+++ b/OCORE
@@ -0,0 +1 @@
+Subproject commit c7254ddbf30c90b61b446220a04e62503597771f
diff --git a/OCORE_web b/OCORE_web
new file mode 160000
index 0000000..fd5b23e
--- /dev/null
+++ b/OCORE_web
@@ -0,0 +1 @@
+Subproject commit fd5b23ec77e64d89a57b7817e76f86bb98fa624c
diff --git a/OCORE_web_pdf b/OCORE_web_pdf
new file mode 160000
index 0000000..a94ddf9
--- /dev/null
+++ b/OCORE_web_pdf
@@ -0,0 +1 @@
+Subproject commit a94ddf90c31291bb3fd43388e055949807cffba0