diff --git a/lib.py b/lib.py
index a2ed53e..b6107f9 100644
--- a/lib.py
+++ b/lib.py
@@ -350,6 +350,13 @@ def dname_records_handler(re2o_zone, dns_zone):
 
 
 def pass_handler(zone, records):
+    """
+    Do nothing (pass)
+
+    Handler which does nothing, used for edge cases like the pseudo-record
+    `name` returned by Re2oAPI or to disable some other handlers in the
+    `HANDLERS` variable.
+    """
     pass