Reword and clarify the NEWS entry.

python · gpshead · Jun 4, 2023 · May 24, 2023 · May 24, 2023 · May 24, 2023
commit 0926f6f1b14e8529fc74833a82cc24253d3e7772
diff --git a/Misc/NEWS.d/next/Core and Builtins/2023-05-24-12-10-54.gh-issue-104690.HX3Jou.rst b/Misc/NEWS.d/next/Core and Builtins/2023-05-24-12-10-54.gh-issue-104690.HX3Jou.rst
@@ -1 +1,6 @@
-Starting new threads and process creation through fork/vfork at interpreter exit is no longer supported, as it can lead to race condition between main Python thread freeing existing thread states and internal :mod:`threading` routines trying to allocate and use state of just created thread or fork/vfork trying to use main thread state in child process.
+Starting new threads and process creation through :func:`os.fork` during interpreter
+shutdown (such as from :mod:`atexit` handlers) is no longer supported.  It can lead
+to race condition between the main Python runtime thread freeing thread states while
+internal :mod:`threading` routines are trying to allocate and use the state of just
+created threads. Or forked children trying to use the mid-shutdown runtime and thread
+state in the child process.