diff --git a/Doc/library/ftplib.rst b/Doc/library/ftplib.rst
index bb15322067245e..88eb0be9de88b8 100644
--- a/Doc/library/ftplib.rst
+++ b/Doc/library/ftplib.rst
@@ -524,14 +524,9 @@ FTP_TLS objects
    :class:`!FTP_TLS` class inherits from :class:`FTP`,
    defining these additional methods and attributes:
 
-   .. attribute:: FTP_TLS.ssl_version
-
-      The SSL version to use (defaults to :data:`ssl.PROTOCOL_SSLv23`).
-
    .. method:: FTP_TLS.auth()
 
-      Set up a secure control connection by using TLS or SSL, depending on what
-      is specified in the :attr:`ssl_version` attribute.
+      Set up a secure control connection by using TLS.
 
       .. versionchanged:: 3.4
          The method now supports hostname check with
@@ -548,7 +543,7 @@ FTP_TLS objects
 
    .. method:: FTP_TLS.prot_p()
 
-      Set up secure data connection.
+      Set up secure data connection by using TLS.
 
    .. method:: FTP_TLS.prot_c()
 
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 5d64af43b69828..ae197f765d1e16 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -1844,6 +1844,14 @@ expression support in the :mod:`re` module).
    lowercase letter ``'ß'`` is equivalent to ``"ss"``. Since it is already
    lowercase, :meth:`lower` would do nothing to ``'ß'``; :meth:`casefold`
    converts it to ``"ss"``.
+   For example:
+
+   .. doctest::
+
+      >>> 'straße'.lower()
+      'straße'
+      >>> 'straße'.casefold()
+      'strasse'
 
    The casefolding algorithm is `described in section 3.13.3 'Default Case
    Folding' of the Unicode Standard
@@ -2300,7 +2308,12 @@ expression support in the :mod:`re` module).
 .. method:: str.lower()
 
    Return a copy of the string with all the cased characters [4]_ converted to
-   lowercase.
+   lowercase. For example:
+
+   .. doctest::
+
+      >>> 'Lower Method Example'.lower()
+      'lower method example'
 
    The lowercasing algorithm used is `described in section 3.13.2 'Default Case
    Conversion' of the Unicode Standard
diff --git a/Include/exports.h b/Include/exports.h
index 62feb09ed2b433..97a674ec2403a4 100644
--- a/Include/exports.h
+++ b/Include/exports.h
@@ -35,6 +35,12 @@
         #define Py_EXPORTED_SYMBOL
         #define Py_LOCAL_SYMBOL
     #endif
+    /* module init functions outside the core must be exported */
+    #if defined(Py_BUILD_CORE)
+        #define _PyINIT_EXPORTED_SYMBOL Py_EXPORTED_SYMBOL
+    #else
+        #define _PyINIT_EXPORTED_SYMBOL __declspec(dllexport)
+    #endif
 #else
 /*
  * If we only ever used gcc >= 5, we could use __has_attribute(visibility)
@@ -52,19 +58,16 @@
         #define Py_EXPORTED_SYMBOL
         #define Py_LOCAL_SYMBOL
     #endif
+    #define _PyINIT_EXPORTED_SYMBOL Py_EXPORTED_SYMBOL
 #endif
 
 /* only get special linkage if built as shared or platform is Cygwin */
 #if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__)
 #       if defined(HAVE_DECLSPEC_DLL)
 #               if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
-#                       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
-#                       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
         /* module init functions inside the core need no external linkage */
         /* except for Cygwin to handle embedding */
-#                       if defined(__CYGWIN__)
-#                               define _PyINIT_FUNC_DECLSPEC Py_EXPORTED_SYMBOL
-#                       else /* __CYGWIN__ */
+#                       if !defined(__CYGWIN__)
 #                               define _PyINIT_FUNC_DECLSPEC
 #                       endif /* __CYGWIN__ */
 #               else /* Py_BUILD_CORE */
@@ -77,12 +80,6 @@
 #                               define PyAPI_FUNC(RTYPE) Py_IMPORTED_SYMBOL RTYPE
 #                       endif /* !__CYGWIN__ */
 #                       define PyAPI_DATA(RTYPE) extern Py_IMPORTED_SYMBOL RTYPE
-        /* module init functions outside the core must be exported */
-#                       if defined(__cplusplus)
-#                               define _PyINIT_FUNC_DECLSPEC extern "C" Py_EXPORTED_SYMBOL
-#                       else /* __cplusplus */
-#                               define _PyINIT_FUNC_DECLSPEC Py_EXPORTED_SYMBOL
-#                       endif /* __cplusplus */
 #               endif /* Py_BUILD_CORE */
 #       endif /* HAVE_DECLSPEC_DLL */
 #endif /* Py_ENABLE_SHARED */
@@ -96,13 +93,17 @@
 #endif
 #ifndef _PyINIT_FUNC_DECLSPEC
 #       if defined(__cplusplus)
-#               define _PyINIT_FUNC_DECLSPEC extern "C" Py_EXPORTED_SYMBOL
+#               define _PyINIT_FUNC_DECLSPEC extern "C" _PyINIT_EXPORTED_SYMBOL
 #       else /* __cplusplus */
-#               define _PyINIT_FUNC_DECLSPEC Py_EXPORTED_SYMBOL
+#               define _PyINIT_FUNC_DECLSPEC _PyINIT_EXPORTED_SYMBOL
 #       endif /* __cplusplus */
 #endif
 
-#define PyMODINIT_FUNC _PyINIT_FUNC_DECLSPEC PyObject*
-#define PyMODEXPORT_FUNC _PyINIT_FUNC_DECLSPEC PyModuleDef_Slot*
+#ifndef PyMODINIT_FUNC
+    #define PyMODINIT_FUNC _PyINIT_FUNC_DECLSPEC PyObject*
+#endif
+#ifndef PyMODEXPORT_FUNC
+    #define PyMODEXPORT_FUNC _PyINIT_FUNC_DECLSPEC PyModuleDef_Slot*
+#endif
 
 #endif /* Py_EXPORTS_H */
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index f3b44c9b3a620a..69c83e085113c9 100644
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -2004,10 +2004,11 @@ def interact(self):
         while True:
             try:
                 request = self.getline('help> ')
-                if not request: break
             except (KeyboardInterrupt, EOFError):
                 break
             request = request.strip()
+            if not request:
+                continue  # back to the prompt
 
             # Make sure significant trailing quoting marks of literals don't
             # get deleted while cleaning input
diff --git a/Lib/test/test_code.py b/Lib/test/test_code.py
index 655f5a9be7fa31..0d5c6e6e77f5d7 100644
--- a/Lib/test/test_code.py
+++ b/Lib/test/test_code.py
@@ -210,7 +210,7 @@
     ctypes = None
 from test.support import (cpython_only,
                           check_impl_detail, requires_debug_ranges,
-                          gc_collect, Py_GIL_DISABLED)
+                          gc_collect, Py_GIL_DISABLED, late_deletion)
 from test.support.script_helper import assert_python_ok
 from test.support import threading_helper, import_helper
 from test.support.bytecode_helper import instructions_with_positions
@@ -1555,6 +1555,11 @@ def myfree(ptr):
 
     FREE_FUNC = freefunc(myfree)
     FREE_INDEX = RequestCodeExtraIndex(FREE_FUNC)
+    # Make sure myfree sticks around at least as long as the interpreter,
+    # since we (currently) can't unregister the function and leaving a
+    # dangling pointer will cause a crash on deallocation of code objects if
+    # something else uses co_extras, like test_capi.test_misc.
+    late_deletion(myfree)
 
     class CoExtra(unittest.TestCase):
         def get_func(self):
diff --git a/Lib/test/test_pydoc/test_pydoc.py b/Lib/test/test_pydoc/test_pydoc.py
index 3e12a2a96fa381..0e113006cfa156 100644
--- a/Lib/test/test_pydoc/test_pydoc.py
+++ b/Lib/test/test_pydoc/test_pydoc.py
@@ -2147,10 +2147,47 @@ def test_url_requests(self):
 
 
 class TestHelper(unittest.TestCase):
+    def mock_interactive_session(self, inputs):
+        """
+        Given a list of inputs, run an interactive help session.  Returns a string
+        of what would be shown on screen.
+        """
+        input_iter = iter(inputs)
+
+        def mock_getline(prompt):
+            output.write(prompt)
+            next_input = next(input_iter)
+            output.write(next_input + os.linesep)
+            return next_input
+
+        with captured_stdout() as output:
+            helper = pydoc.Helper(output=output)
+            with unittest.mock.patch.object(helper, "getline", mock_getline):
+                helper.interact()
+
+        # handle different line endings across platforms consistently
+        return output.getvalue().strip().splitlines(keepends=False)
+
     def test_keywords(self):
         self.assertEqual(sorted(pydoc.Helper.keywords),
                          sorted(keyword.kwlist))
 
+    def test_interact_empty_line_continues(self):
+        # gh-138568: test pressing Enter without input should continue in help session
+        self.assertEqual(
+            self.mock_interactive_session(["", "    ", "quit"]),
+            ["help> ", "help>     ", "help> quit"],
+        )
+
+    def test_interact_quit_commands_exit(self):
+        quit_commands = ["quit", "q", "exit"]
+        for quit_cmd in quit_commands:
+            with self.subTest(quit_command=quit_cmd):
+                self.assertEqual(
+                    self.mock_interactive_session([quit_cmd]),
+                    [f"help> {quit_cmd}"],
+                )
+
 
 class PydocWithMetaClasses(unittest.TestCase):
     def tearDown(self):
diff --git a/Misc/NEWS.d/next/C_API/2025-11-17-17-46-16.gh-issue-141671.cVXNW5.rst b/Misc/NEWS.d/next/C_API/2025-11-17-17-46-16.gh-issue-141671.cVXNW5.rst
new file mode 100644
index 00000000000000..304a6a5f75ff3b
--- /dev/null
+++ b/Misc/NEWS.d/next/C_API/2025-11-17-17-46-16.gh-issue-141671.cVXNW5.rst
@@ -0,0 +1,2 @@
+:c:macro:`PyMODINIT_FUNC` (and the new :c:macro:`PyMODEXPORT_FUNC`) now adds
+a linkage declaration (``__declspec(dllexport)``) on Windows.
diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2025-09-06-08-29-08.gh-issue-138568.iZlalC.rst b/Misc/NEWS.d/next/Core_and_Builtins/2025-09-06-08-29-08.gh-issue-138568.iZlalC.rst
new file mode 100644
index 00000000000000..8a916310259c78
--- /dev/null
+++ b/Misc/NEWS.d/next/Core_and_Builtins/2025-09-06-08-29-08.gh-issue-138568.iZlalC.rst
@@ -0,0 +1,2 @@
+Adjusted the built-in :func:`help` function so that empty inputs are ignored in
+interactive mode.