#5975: add unix_dialect to csv module.
diff --git a/Doc/library/csv.rst b/Doc/library/csv.rst
index 8ca1741..ea18349 100644
--- a/Doc/library/csv.rst
+++ b/Doc/library/csv.rst
@@ -187,6 +187,15 @@
    TAB-delimited file.  It is registered with the dialect name ``'excel-tab'``.
 
 
+.. class:: unix_dialect()
+
+   The :class:`unix_dialect` class defines the usual properties of a CSV file
+   generated on UNIX systems, i.e. using ``'\n'`` as line terminator and quoting
+   all fields.  It is registered with the dialect name ``'unix'``.
+
+   .. versionadded:: 3.2
+
+
 .. class:: Sniffer()
 
    The :class:`Sniffer` class is used to deduce the format of a CSV file.