diff --git a/in/public/sphinx/build.rst b/in/public/sphinx/build.rst
index 9031cbe..098ce52 100644
--- a/in/public/sphinx/build.rst
+++ b/in/public/sphinx/build.rst
@@ -1,4 +1,16 @@
 Build documentation
 ===================
 
-.. todo:: command line and conf.py
+.. code:: python3
+
+ import sphinx
+
+ sphinx.build_main([
+     '-E',
+     '-j', '2',
+     '-b', 'html',
+     '-D', 'project=Project',
+     '-c', conf_directory,
+     input_directory,
+     output_directory,
+ ])