diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..edad80e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,4 @@
+[submodule "doc"]
+	path = doc
+	url = git@codeberg.org:dacs-git/numericx.git
+	branch = pages
diff --git a/doc b/doc
new file mode 160000
index 0000000..39a914d
--- /dev/null
+++ b/doc
@@ -0,0 +1 @@
+Subproject commit 39a914dbbfd8834adfbedf426815d753233b522b