diff --git a/rwx/prj/sphinx.py b/rwx/prj/sphinx.py
index afa0901..13252f8 100644
--- a/rwx/prj/sphinx.py
+++ b/rwx/prj/sphinx.py
@@ -9,10 +9,14 @@ from rwx.prj import Project
 
 
 class SphinxProject(Project):
+    """Child class for a project based on Sphinx."""
+
     def __init__(self, file_path: str) -> None:
+        """Call the parent constructor."""
         super().__init__(file_path)
 
     def build(self) -> None:
+        """Build the project."""
         output_root: str = path.join(self.root, "out")
         wipe(output_root)
         arguments: list[str] = [