diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index ba781b3..a34c497 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -961,6 +961,35 @@
        to a console and Python apps started with :program:`pythonw`.
 
 
+.. data:: thread_info
+
+   A :term:`struct sequence` holding information about the thread
+   implementation.
+
+   +------------------+---------------------------------------------------------+
+   | Attribute        | Explanation                                             |
+   +==================+=========================================================+
+   | :const:`name`    | Name of the thread implementation:                      |
+   |                  |                                                         |
+   |                  |  * ``'nt'``: Windows threads                            |
+   |                  |  * ``'os2'``: OS/2 threads                              |
+   |                  |  * ``'pthread'``: POSIX threads                         |
+   |                  |  * ``'solaris'``: Solaris threads                       |
+   +------------------+---------------------------------------------------------+
+   | :const:`lock`    | Name of the lock implementation:                        |
+   |                  |                                                         |
+   |                  |  * ``'semaphore'``: a lock uses a semaphore             |
+   |                  |  * ``'mutex+cond'``: a lock uses a mutex                |
+   |                  |    and a condition variable                             |
+   |                  |  * ``None`` if this information is unknown              |
+   +------------------+---------------------------------------------------------+
+   | :const:`version` | Name and version of the thread library. It is a string, |
+   |                  | or ``None`` if these informations are unknown.          |
+   +------------------+---------------------------------------------------------+
+
+   .. versionadded:: 3.3
+
+
 .. data:: tracebacklimit
 
    When this variable is set to an integer value, it determines the maximum number
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index dd2226d..df47045 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -175,30 +175,6 @@
    Availability: Windows, systems with POSIX threads.
 
 
-.. function:: _info()
-
-   Return a dictionary with informations about the thread implementation.
-   The ``'name'`` key gives the name of the thread implementation (string):
-
-    * ``'nt'``: Windows threads
-    * ``'os2'``: OS/2 threads
-    * ``'pthread'``: POSIX threads
-    * ``'solaris'``: Solaris threads
-
-   POSIX threads have two more keys:
-
-    * ``'lock_implementation'`` (string): name of the lock
-      implementation
-
-      * ``'semaphore'``: a lock uses a semaphore
-      * ``'mutex+cond'``: a lock uses a mutex and a condition variable
-
-    * ``'pthread_version'`` (string, optional): name and version of the pthread
-      library
-
-   .. versionadded:: 3.3
-
-
 This module also defines the following constant:
 
 .. data:: TIMEOUT_MAX