docs: document description field of Marker (#507)

alecthomas · Feb 1, 2024 · 28a799a · 28a799a
1 parent 503dd34
commit 28a799a
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/voluptuous/schema_builder.py b/voluptuous/schema_builder.py
@@ -1020,7 +1020,11 @@ def __repr__(self):
 
 
 class Marker(object):
-    """Mark nodes for special treatment."""
+    """Mark nodes for special treatment.
+
+    `description` is an optional field, unused by Voluptuous itself, but can be used
+    introspected by any external tool, for example to generate schema documentation.
+    """
 
     def __init__(
         self,