diff --git a/examples/quad.py b/examples/quad.py
index a04c6faf..1e787cdb 100644
--- a/examples/quad.py
+++ b/examples/quad.py
@@ -1,3 +1,10 @@
+r"""
+Quad geometry example
+---------------------
+
+Quad geometry example.
+
+"""
 from __future__ import annotations
 
 import gmsh