Issue #23105: Updated documentation on open() flag constants.

Doc/library/os.rst

@@ -908,7 +908,7 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
           O_EXCL
           O_TRUNC
 
-   These constants are available on Unix and Windows.
+   The above constants are available on Unix and Windows.
 
 
 .. data:: O_DSYNC
@@ -917,11 +917,9 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
           O_NDELAY
           O_NONBLOCK
           O_NOCTTY
-          O_SHLOCK
-          O_EXLOCK
           O_CLOEXEC
 
-   These constants are only available on Unix.
+   The above constants are only available on Unix.
 
    .. versionchanged:: 3.3
       Add :data:`O_CLOEXEC` constant.
@@ -934,7 +932,7 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
           O_SEQUENTIAL
           O_TEXT
 
-   These constants are only available on Windows.
+   The above constants are only available on Windows.
 
 
 .. data:: O_ASYNC
@@ -944,8 +942,10 @@ or `the MSDN <https://msdn.microsoft.com/en-us/library/z0kc8e3z.aspx>`_ on Windo
           O_NOATIME
           O_PATH
           O_TMPFILE
+          O_SHLOCK
+          O_EXLOCK
 
-   These constants are GNU extensions and not present if they are not defined by
+   The above constants are extensions and not present if they are not defined by
    the C library.
 
    .. versionchanged:: 3.4