Implemented PEP 370
diff --git a/Doc/library/site.rst b/Doc/library/site.rst
index 4e54900..ff70aff 100644
--- a/Doc/library/site.rst
+++ b/Doc/library/site.rst
@@ -85,3 +85,51 @@
 empty, and the path manipulations are skipped; however the import of
 :mod:`sitecustomize` is still attempted.
 
+
+.. data:: PREFIXES
+
+   A list of prefixes for site package directories
+
+   .. versionadded:: 2.6
+
+
+.. data:: ENABLE_USER_SITE
+
+   Flag showing the status of the user site directory. True means the
+   user site directory is enabled and added to sys.path. When the flag
+   is None the user site directory is disabled for security reasons.
+
+   .. versionadded:: 2.6
+
+
+.. data:: USER_SITE
+
+   Path to the user site directory for the current Python version or None
+
+   .. versionadded:: 2.6
+
+
+.. data:: USER_BASE
+
+   Path to the base directory for user site directories
+
+   .. versionadded:: 2.6
+
+
+.. envvar:: PYTHONNOUSERSITE
+
+   .. versionadded:: 2.6
+
+
+.. envvar:: PYTHONUSERBASE
+
+   .. versionadded:: 2.6
+
+
+.. function:: addsitedir(sitedir, known_paths=None)
+
+   Adds a directory to sys.path and processes its pth files.
+
+
+XXX Update documentation
+XXX document python -m site --user-base --user-site
diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst
index 355e9ed..a6ab7ad 100644
--- a/Doc/using/cmdline.rst
+++ b/Doc/using/cmdline.rst
@@ -21,7 +21,7 @@
 
 When invoking Python, you may specify any of these options::
 
-    python [-dEiOQStuUvxX3?] [-c command | -m module-name | script | - ] [args]
+    python [-dEiOQsStuUvxX3?] [-c command | -m module-name | script | - ] [args]
 
 The most common use case is, of course, a simple invocation of a script::
 
@@ -240,6 +240,17 @@
       :pep:`238` -- Changing the division operator
 
 
+.. cmdoption:: -s
+
+   Don't add user site directory to sys.path
+
+   .. versionadded:: 2.6
+
+   .. seealso::
+
+      :pep:`370` -- Per user site-packages directory
+
+
 .. cmdoption:: -S
 
    Disable the import of the module :mod:`site` and the site-dependent
@@ -471,6 +482,28 @@
    .. versionadded:: 2.6
 
 
+.. envvar:: PYTHONNOUSERSITE
+
+   If this is set, Python won't add the user site directory to sys.path
+
+   .. versionadded:: 2.6
+
+   .. seealso::
+
+      :pep:`370` -- Per user site-packages directory
+
+
+.. envvar:: PYTHONUSERBASE
+
+   Sets the base directory for the user site directory
+
+   .. versionadded:: 2.6
+
+   .. seealso::
+
+      :pep:`370` -- Per user site-packages directory
+
+
 .. envvar:: PYTHONEXECUTABLE
 
    If this environment variable is set, ``sys.argv[0]`` will be set to its