diff --git a/mrmustard/lab_dev/wires.py b/mrmustard/lab_dev/wires.py
index 5c87029f9..63bf1ec5a 100644
--- a/mrmustard/lab_dev/wires.py
+++ b/mrmustard/lab_dev/wires.py
@@ -83,6 +83,13 @@ class Wires:
         >>> assert w.output.ket.ids == w.ids[4:6]
         >>> assert w.input.ket.ids == w.ids[6:]
 
+    To access the index of a su set of wires in standard order (i.e. skipping over wires not belonging to the subset),
+    one can use the ``indices`` attribute:
+    .. code-block::
+            >>> w = Wires(modes_in_ket = [0,1], modes_out_ket = [0,1])
+            >>> assert w.indices == [0,1,2,3]
+            >>> assert w.input.indices == [2,3]
+        >>> 
     Note that subsets return new ``Wires`` objects with the same ids as the original object.
 
     Args: