Cleanup of documentation change from #17860
Reformulated the textual change, and applied it to the docstring as well.
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index cf9fd0b..3a30821 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -290,11 +290,14 @@
.. index::
single: universal newlines; subprocess module
- If *universal_newlines* is ``True``, the file objects *stdin*, *stdout* and
- *stderr* will be opened as text streams in :term:`universal newlines` mode
+ If *universal_newlines* is ``False`` the file objects *stdin*, *stdout* and
+ *stderr* will be opened as binary streams, and no line ending conversion is
+ done.
+
+ If *universal_newlines* is ``True``, these file objects
+ will be opened as text streams in :term:`universal newlines` mode
using the encoding returned by :func:`locale.getpreferredencoding(False)
- <locale.getpreferredencoding>`, otherwise these streams will be opened
- as binary streams. For *stdin*, line ending characters
+ <locale.getpreferredencoding>`. For *stdin*, line ending characters
``'\n'`` in the input will be converted to the default line separator
:data:`os.linesep`. For *stdout* and *stderr*, all line endings in the
output will be converted to ``'\n'``. For more information see the