diff --git a/docs/source/classes.rst b/docs/source/classes.rst
new file mode 100644
index 0000000..0efb46e
--- /dev/null
+++ b/docs/source/classes.rst
@@ -0,0 +1,2 @@
+ptulsconv Classes
+=================
\ No newline at end of file
diff --git a/docs/source/index.rst b/docs/source/index.rst
index d8d1f87..793e746 100644
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -13,13 +13,22 @@ exports into JSON documents for processing by other applications.
 .. toctree::
    :numbered:
    :maxdepth: 2
-   :caption: Contents:
+   :caption: User Documentation
 
    quickstart
    tagging
    for_adr
    cli_reference
 
+.. toctree::
+   :numbered:
+   :maxdepth: 2
+   :caption: Developer Documentation
+
+   modules
+   classes
+
+
 Indices and tables
 ==================
 
diff --git a/docs/source/modules.rst b/docs/source/modules.rst
new file mode 100644
index 0000000..237bb15
--- /dev/null
+++ b/docs/source/modules.rst
@@ -0,0 +1,3 @@
+ptulsconv Modules
+=================
+