#9689: add links from overview to in-depth class API descriptions.

Doc/library/threading.rst

@@ -33,6 +33,8 @@ This module defines the following functions and objects:
    variable allows one or more threads to wait until they are notified by another
    thread.
 
+   See :ref:`condition-objects`.
+
 
 .. function:: current_thread()
 
@@ -58,6 +60,8 @@ This module defines the following functions and objects:
    with the :meth:`clear` method.  The :meth:`wait` method blocks until the flag
    is true.
 
+   See :ref:`event-objects`.
+
 
 .. class:: local
 
@@ -80,6 +84,8 @@ This module defines the following functions and objects:
    acquired it, subsequent attempts to acquire it block, until it is released; any
    thread may release it.
 
+   See :ref:`lock-objects`.
+
 
 .. function:: RLock()
 
@@ -88,6 +94,8 @@ This module defines the following functions and objects:
    reentrant lock, the same thread may acquire it again without blocking; the
    thread must release it once for each time it has acquired it.
 
+   See :ref:`rlock-objects`.
+
 
 .. function:: Semaphore(value=1)
    :noindex:
@@ -98,6 +106,8 @@ This module defines the following functions and objects:
    if necessary until it can return without making the counter negative.  If not
    given, *value* defaults to 1.
 
+   See :ref:`semaphore-objects`.
+
 
 .. function:: BoundedSemaphore(value=1)
 
@@ -109,15 +119,21 @@ This module defines the following functions and objects:
 
 
 .. class:: Thread
+   :noindex:
 
    A class that represents a thread of control.  This class can be safely
    subclassed in a limited fashion.
 
+   See :ref:`thread-objects`.
+
 
 .. class:: Timer
+   :noindex:
 
    A thread that executes a function after a specified interval has passed.
 
+   See :ref:`timer-objects`.
+
 
 .. function:: settrace(func)