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-rw-r--r--tools/verification/dot2/automata.py3
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diff --git a/tools/verification/dot2/automata.py b/tools/verification/dot2/automata.py
index f22e1dff19ce..baffeb960ff0 100644
--- a/tools/verification/dot2/automata.py
+++ b/tools/verification/dot2/automata.py
@@ -4,6 +4,9 @@
# Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@kernel.org>
#
# Automata object: parse an automata in dot file digraph format into a python object
+#
+# For further information, see:
+# Documentation/trace/rv/deterministic_automata.rst
import ntpath