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diff --git a/documentation/pyserial_api.rst b/documentation/pyserial_api.rst
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--- a/documentation/pyserial_api.rst
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@@ -494,6 +494,8 @@ Native ports
.. versionchanged:: 3.0 renamed from ``applySettingsDict``
+ .. _context-manager:
+
This class can be used as context manager. The serial port is closed when
the context is left.