Doc fix for issue2637.
diff --git a/Doc/library/urllib.parse.rst b/Doc/library/urllib.parse.rst
index 161614b..2163e6c 100644
--- a/Doc/library/urllib.parse.rst
+++ b/Doc/library/urllib.parse.rst
@@ -226,7 +226,8 @@
.. function:: quote(string[, safe[, encoding[, errors]]])
Replace special characters in *string* using the ``%xx`` escape. Letters,
- digits, and the characters ``'_.-'`` are never quoted. The optional *safe*
+ digits, and the characters ``'_.-'`` are never quoted. By default, this
+ function is intended for quoting the path section of URL. The optional *safe*
parameter specifies additional ASCII characters that should not be quoted
--- its default value is ``'/'``.