diff --git a/Lib/idlelib/AutoCompleteWindow.py b/Lib/idlelib/AutoCompleteWindow.py
index 7f8adaf..56433cd 100644
--- a/Lib/idlelib/AutoCompleteWindow.py
+++ b/Lib/idlelib/AutoCompleteWindow.py
@@ -10,13 +10,14 @@
 KEYPRESS_VIRTUAL_EVENT_NAME = "<<autocompletewindow-keypress>>"
 # We need to bind event beyond <Key> so that the function will be called
 # before the default specific IDLE function
-KEYPRESS_SEQUENCES = ("<Key>", "<Key-BackSpace>", "<Key-Return>",
-                      "<Key-Up>", "<Key-Down>", "<Key-Home>", "<Key-End>")
+KEYPRESS_SEQUENCES = ("<Key>", "<Key-BackSpace>", "<Key-Return>", "<Key-Tab>",
+                      "<Key-Up>", "<Key-Down>", "<Key-Home>", "<Key-End>",
+                      "<Key-Prior>", "<Key-Next>")
 KEYRELEASE_VIRTUAL_EVENT_NAME = "<<autocompletewindow-keyrelease>>"
 KEYRELEASE_SEQUENCE = "<KeyRelease>"
-LISTUPDATE_SEQUENCE = "<ButtonRelease>"
+LISTUPDATE_SEQUENCE = "<B1-ButtonRelease>"
 WINCONFIG_SEQUENCE = "<Configure>"
-DOUBLECLICK_SEQUENCE = "<Double-ButtonRelease>"
+DOUBLECLICK_SEQUENCE = "<B1-Double-ButtonRelease>"
 
 class AutoCompleteWindow:
 
@@ -49,6 +50,8 @@
         # event ids
         self.hideid = self.keypressid = self.listupdateid = self.winconfigid \
         = self.keyreleaseid = self.doubleclickid                         = None
+        # Flag set if last keypress was a tab
+        self.lastkey_was_tab = False
 
     def _change_start(self, newstart):
         i = 0
@@ -118,11 +121,6 @@
             i = 0
             while i < len(lts) and i < len(selstart) and lts[i] == selstart[i]:
                 i += 1
-            previous_completion = self.completions[cursel - 1]
-            while cursel > 0 and selstart[:i] <= previous_completion:
-                i += 1
-                if selstart == previous_completion:
-                    break  # maybe we have a duplicate?
             newstart = selstart[:i]
         self._change_start(newstart)
 
@@ -206,7 +204,7 @@
                                              self.keyrelease_event)
         self.widget.event_add(KEYRELEASE_VIRTUAL_EVENT_NAME,KEYRELEASE_SEQUENCE)
         self.listupdateid = listbox.bind(LISTUPDATE_SEQUENCE,
-                                         self.listupdate_event)
+                                         self.listselect_event)
         self.winconfigid = acw.bind(WINCONFIG_SEQUENCE, self.winconfig_event)
         self.doubleclickid = listbox.bind(DOUBLECLICK_SEQUENCE,
                                           self.doubleclick_event)
@@ -215,24 +213,34 @@
         if not self.is_active():
             return
         # Position the completion list window
+        text = self.widget
+        text.see(self.startindex)
+        x, y, cx, cy = text.bbox(self.startindex)
         acw = self.autocompletewindow
-        self.widget.see(self.startindex)
-        x, y, cx, cy = self.widget.bbox(self.startindex)
-        acw.wm_geometry("+%d+%d" % (x + self.widget.winfo_rootx(),
-                                    y + self.widget.winfo_rooty() \
-                                    -acw.winfo_height()))
-
+        acw_width, acw_height = acw.winfo_width(), acw.winfo_height()
+        text_width, text_height = text.winfo_width(), text.winfo_height()
+        new_x = text.winfo_rootx() + min(x, max(0, text_width - acw_width))
+        new_y = text.winfo_rooty() + y
+        if (text_height - (y + cy) >= acw_height # enough height below
+            or y < acw_height): # not enough height above
+            # place acw below current line
+            new_y += cy
+        else:
+            # place acw above current line
+            new_y -= acw_height
+        acw.wm_geometry("+%d+%d" % (new_x, new_y))
 
     def hide_event(self, event):
         if not self.is_active():
             return
         self.hide_window()
 
-    def listupdate_event(self, event):
+    def listselect_event(self, event):
         if not self.is_active():
             return
         self.userwantswindow = True
-        self._selection_changed()
+        cursel = int(self.listbox.curselection()[0])
+        self._change_start(self.completions[cursel])
 
     def doubleclick_event(self, event):
         # Put the selected completion in the text, and close the list
@@ -248,7 +256,8 @@
             state = event.mc_state
         else:
             state = 0
-
+        if keysym != "Tab":
+            self.lastkey_was_tab = False
         if (len(keysym) == 1 or keysym in ("underscore", "BackSpace")
             or (self.mode==AutoComplete.COMPLETE_FILES and keysym in
                 ("period", "minus"))) \
@@ -330,13 +339,21 @@
             self.listbox.select_clear(cursel)
             self.listbox.select_set(newsel)
             self._selection_changed()
+            self._change_start(self.completions[newsel])
             return "break"
 
         elif (keysym == "Tab" and not state):
-            # The user wants a completion, but it is handled by AutoComplete
-            # (not AutoCompleteWindow), so ignore.
-            self.userwantswindow = True
-            return
+            if self.lastkey_was_tab:
+                # two tabs in a row; insert current selection and close acw
+                cursel = int(self.listbox.curselection()[0])
+                self._change_start(self.completions[cursel])
+                self.hide_window()
+                return "break"
+            else:
+                # first tab; let AutoComplete handle the completion
+                self.userwantswindow = True
+                self.lastkey_was_tab = True
+                return
 
         elif any(s in keysym for s in ("Shift", "Control", "Alt",
                                        "Meta", "Command", "Option")):
diff --git a/Lib/idlelib/CallTips.py b/Lib/idlelib/CallTips.py
index 1ffbc16..b395f15 100644
--- a/Lib/idlelib/CallTips.py
+++ b/Lib/idlelib/CallTips.py
@@ -3,7 +3,9 @@
 Call Tips are floating windows which display function, class, and method
 parameter and docstring information when you type an opening parenthesis, and
 which disappear when you type a closing parenthesis.
+
 """
+import re
 import sys
 import types
 
@@ -89,6 +91,8 @@
         two unrelated modules are being edited some calltips in the current
         module may be inoperative if the module was not the last to run.
 
+        To find methods, fetch_tip must be fed a fully qualified name.
+
         """
         try:
             rpcclt = self.editwin.flist.pyshell.interp.rpcclt
@@ -108,7 +112,7 @@
             namespace.update(__main__.__dict__)
             try:
                 return eval(name, namespace)
-            except:
+            except (NameError, AttributeError):
                 return None
 
 def _find_constructor(class_ob):
@@ -124,39 +128,37 @@
 
 def get_arg_text(ob):
     """Get a string describing the arguments for the given object"""
-    argText = ""
+    arg_text = ""
     if ob is not None:
-        argOffset = 0
+        arg_offset = 0
         if type(ob) in (types.ClassType, types.TypeType):
             # Look for the highest __init__ in the class chain.
             fob = _find_constructor(ob)
             if fob is None:
                 fob = lambda: None
             else:
-                argOffset = 1
+                arg_offset = 1
         elif type(ob)==types.MethodType:
             # bit of a hack for methods - turn it into a function
             # but we drop the "self" param.
             fob = ob.im_func
-            argOffset = 1
+            arg_offset = 1
         else:
             fob = ob
-        # Try and build one for Python defined functions
+        # Try to build one for Python defined functions
         if type(fob) in [types.FunctionType, types.LambdaType]:
-            try:
-                realArgs = fob.func_code.co_varnames[argOffset:fob.func_code.co_argcount]
-                defaults = fob.func_defaults or []
-                defaults = list(map(lambda name: "=%s" % repr(name), defaults))
-                defaults = [""] * (len(realArgs)-len(defaults)) + defaults
-                items = map(lambda arg, dflt: arg+dflt, realArgs, defaults)
-                if fob.func_code.co_flags & 0x4:
-                    items.append("...")
-                if fob.func_code.co_flags & 0x8:
-                    items.append("***")
-                argText = ", ".join(items)
-                argText = "(%s)" % argText
-            except:
-                pass
+            argcount = fob.func_code.co_argcount
+            real_args = fob.func_code.co_varnames[arg_offset:argcount]
+            defaults = fob.func_defaults or []
+            defaults = list(map(lambda name: "=%s" % repr(name), defaults))
+            defaults = [""] * (len(real_args) - len(defaults)) + defaults
+            items = map(lambda arg, dflt: arg + dflt, real_args, defaults)
+            if fob.func_code.co_flags & 0x4:
+                items.append("...")
+            if fob.func_code.co_flags & 0x8:
+                items.append("***")
+            arg_text = ", ".join(items)
+            arg_text = "(%s)" % re.sub("\.\d+", "<tuple>", arg_text)
         # See if we can use the docstring
         doc = getattr(ob, "__doc__", "")
         if doc:
@@ -164,10 +166,10 @@
             pos = doc.find("\n")
             if pos < 0 or pos > 70:
                 pos = 70
-            if argText:
-                argText += "\n"
-            argText += doc[:pos]
-    return argText
+            if arg_text:
+                arg_text += "\n"
+            arg_text += doc[:pos]
+    return arg_text
 
 #################################################
 #
@@ -181,16 +183,18 @@
     def t4(*args): "(...)"
     def t5(a, *args): "(a, ...)"
     def t6(a, b=None, *args, **kw): "(a, b=None, ..., ***)"
+    def t7((a, b), c, (d, e)): "(<tuple>, c, <tuple>)"
 
-    class TC:
-        "(a=None, ...)"
-        def __init__(self, a=None, *b): "(a=None, ...)"
+    class TC(object):
+        "(ai=None, ...)"
+        def __init__(self, ai=None, *b): "(ai=None, ...)"
         def t1(self): "()"
-        def t2(self, a, b=None): "(a, b=None)"
-        def t3(self, a, *args): "(a, ...)"
+        def t2(self, ai, b=None): "(ai, b=None)"
+        def t3(self, ai, *args): "(ai, ...)"
         def t4(self, *args): "(...)"
-        def t5(self, a, *args): "(a, ...)"
-        def t6(self, a, b=None, *args, **kw): "(a, b=None, ..., ***)"
+        def t5(self, ai, *args): "(ai, ...)"
+        def t6(self, ai, b=None, *args, **kw): "(ai, b=None, ..., ***)"
+        def t7(self, (ai, b), c, (d, e)): "(<tuple>, c, <tuple>)"
 
     def test(tests):
         ct = CallTips()
@@ -198,15 +202,20 @@
         for t in tests:
             expected = t.__doc__ + "\n" + t.__doc__
             name = t.__name__
-            arg_text = ct.fetch_tip(name)
+            # exercise fetch_tip(), not just get_arg_text()
+            try:
+                qualified_name = "%s.%s" % (t.im_class.__name__, name)
+            except AttributeError:
+                qualified_name = name
+            arg_text = ct.fetch_tip(qualified_name)
             if arg_text != expected:
                 failed.append(t)
-                print("%s - expected %s, but got %s" % (t, expected,
-                                                        get_arg_text(entity)))
+                fmt = "%s - expected %s, but got %s"
+                print(fmt % (t.__name__, expected, get_arg_text(t)))
         print("%d of %d tests failed" % (len(failed), len(tests)))
 
     tc = TC()
-    tests = (t1, t2, t3, t4, t5, t6,
-             TC, tc.t1, tc.t2, tc.t3, tc.t4, tc.t5, tc.t6)
+    tests = (t1, t2, t3, t4, t5, t6, t7,
+             TC, tc.t1, tc.t2, tc.t3, tc.t4, tc.t5, tc.t6, tc.t7)
 
     test(tests)
diff --git a/Lib/idlelib/CodeContext.py b/Lib/idlelib/CodeContext.py
index 28e99c5..420ec33 100644
--- a/Lib/idlelib/CodeContext.py
+++ b/Lib/idlelib/CodeContext.py
@@ -10,6 +10,7 @@
 
 """
 import Tkinter
+from Tkconstants import TOP, LEFT, X, W, SUNKEN
 from configHandler import idleConf
 import re
 from sys import maxint as INFINITY
@@ -24,7 +25,6 @@
 
 class CodeContext:
     menudefs = [('options', [('!Code Conte_xt', '<<toggle-code-context>>')])]
-
     context_depth = idleConf.GetOption("extensions", "CodeContext",
                                        "numlines", type="int", default=3)
     bgcolor = idleConf.GetOption("extensions", "CodeContext",
@@ -54,66 +54,33 @@
 
     def toggle_code_context_event(self, event=None):
         if not self.label:
-            # The following code attempts to figure out the required border
-            # width and vertical padding required for the CodeContext widget
-            # to be perfectly aligned with the text in the main Text widget.
-            # This is done by retrieving the appropriate attributes from the
-            # editwin.text and editwin.text_frame widgets.
+            # Calculate the border width and horizontal padding required to
+            # align the context with the text in the main Text widget.
             #
             # All values are passed through int(str(<value>)), since some
-            # values may be pixel objects, which can't simply be added added
-            # to ints.
-            #
-            # This code is considered somewhat unstable since it relies on
-            # some of Tk's inner workings. However its effect is merely
-            # cosmetic; failure will only cause the CodeContext text to be
-            # somewhat misaligned with the text in the main Text widget.
-            #
-            # To avoid possible errors, all references to the inner workings
-            # of Tk are executed inside try/except blocks.
-
-            widgets_for_width_calc = self.editwin.text, self.editwin.text_frame
-
-            # calculate the required vertical padding
+            # values may be pixel objects, which can't simply be added to ints.
+            widgets = self.editwin.text, self.editwin.text_frame
+            # Calculate the required vertical padding
             padx = 0
-            for widget in widgets_for_width_calc:
-                try:
-                    # retrieve the "padx" attribte from widget's pack info
-                    padx += int(str( widget.pack_info()['padx'] ))
-                except:
-                    pass
-                try:
-                    # retrieve the widget's "padx" attribte
-                    padx += int(str( widget.cget('padx') ))
-                except:
-                    pass
-
-            # calculate the required border width
-            border_width = 0
-            for widget in widgets_for_width_calc:
-                try:
-                    # retrieve the widget's "border" attribte
-                    border_width += int(str( widget.cget('border') ))
-                except:
-                    pass
-
+            for widget in widgets:
+                padx += int(str( widget.pack_info()['padx'] ))
+                padx += int(str( widget.cget('padx') ))
+            # Calculate the required border width
+            border = 0
+            for widget in widgets:
+                border += int(str( widget.cget('border') ))
             self.label = Tkinter.Label(self.editwin.top,
                                        text="\n" * (self.context_depth - 1),
-                                       anchor="w", justify="left",
+                                       anchor=W, justify=LEFT,
                                        font=self.textfont,
                                        bg=self.bgcolor, fg=self.fgcolor,
                                        width=1, #don't request more than we get
-                                       padx=padx, #line up with text widget
-                                       border=border_width, #match border width
-                                       relief="sunken",
-                                       )
-
-            # CodeContext's label widget is packed before and above the
-            # text_frame widget, thus ensuring that it will appear directly
-            # above it.
-            self.label.pack(side="top", fill="x", expand=False,
+                                       padx=padx, border=border,
+                                       relief=SUNKEN)
+            # Pack the label widget before and above the text_frame widget,
+            # thus ensuring that it will appear directly above text_frame
+            self.label.pack(side=TOP, fill=X, expand=False,
                             before=self.editwin.text_frame)
-
         else:
             self.label.destroy()
             self.label = None
@@ -190,7 +157,6 @@
                                                  stopindent)
         self.info.extend(lines)
         self.topvisible = new_topvisible
-
         # empty lines in context pane:
         context_strings = [""] * max(0, self.context_depth - len(self.info))
         # followed by the context hint lines:
diff --git a/Lib/idlelib/IOBinding.py b/Lib/idlelib/IOBinding.py
index e23b40c..b433c9b 100644
--- a/Lib/idlelib/IOBinding.py
+++ b/Lib/idlelib/IOBinding.py
@@ -209,7 +209,7 @@
                 # gets set to "not modified" at every new prompt.
                 try:
                     interp = self.editwin.interp
-                except:
+                except AttributeError:
                     interp = None
                 if not self.filename and self.get_saved() and not interp:
                     self.editwin.flist.open(filename, self.loadfile)
diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index 5f73a69..86802ff 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -3,6 +3,19 @@
 
 *Release date: XX-XXX-200X*
 
+- Corrected some bugs in AutoComplete.  Also, Page Up/Down in ACW implemented;
+  mouse and cursor selection in ACWindow implemented; double Tab inserts
+  current selection and closes ACW (similar to double-click and Return); scroll
+  wheel now works in ACW.  Added AutoComplete instructions to IDLE Help.
+
+- AutoCompleteWindow moved below input line, will move above if there
+  isn't enough space.  Patch 1621265 Tal Einat
+
+- Calltips now 'handle' tuples in the argument list (display '<tuple>' :)
+  Suggested solution by Christos Georgiou, Bug 791968.
+
+- Add 'raw' support to configHandler. Patch 1650174 Tal Einat.
+
 - Avoid hang when encountering a duplicate in a completion list. Bug 1571112.
 
 - Patch #1362975: Rework CodeContext indentation algorithm to
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index 4c16db9..b16bbc0 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -706,34 +706,36 @@
         debugger = self.debugger
         try:
             self.tkconsole.beginexecuting()
-            try:
-                if not debugger and self.rpcclt is not None:
-                    self.active_seq = self.rpcclt.asyncqueue("exec", "runcode",
-                                                            (code,), {})
-                elif debugger:
-                    debugger.run(code, self.locals)
-                else:
-                    exec(code, self.locals)
-            except SystemExit:
-                if not self.tkconsole.closing:
-                    if tkMessageBox.askyesno(
-                        "Exit?",
-                        "Do you want to exit altogether?",
-                        default="yes",
-                        master=self.tkconsole.text):
-                        raise
-                    else:
-                        self.showtraceback()
-                else:
+            if not debugger and self.rpcclt is not None:
+                self.active_seq = self.rpcclt.asyncqueue("exec", "runcode",
+                                                        (code,), {})
+            elif debugger:
+                debugger.run(code, self.locals)
+            else:
+                exec(code, self.locals)
+        except SystemExit:
+            if not self.tkconsole.closing:
+                if tkMessageBox.askyesno(
+                    "Exit?",
+                    "Do you want to exit altogether?",
+                    default="yes",
+                    master=self.tkconsole.text):
                     raise
-            except:
-                if use_subprocess:
-                    # When run w/o subprocess, both user and IDLE errors
-                    # are printed here; skip message in that case.
-                    print("IDLE internal error in runcode()", file=self.tkconsole.stderr)
+                else:
+            else:
+                raise
+        except:
+            if use_subprocess:
+                print("IDLE internal error in runcode()",
+                      file=self.tkconsole.stderr)
                 self.showtraceback()
-                if use_subprocess:
-                    self.tkconsole.endexecuting()
+                self.tkconsole.endexecuting()
+            else:
+                if self.tkconsole.canceled:
+                    self.tkconsole.canceled = False
+                    print("KeyboardInterrupt", file=self.tkconsole.stderr)
+                else:
+                    self.showtraceback()
         finally:
             if not use_subprocess:
                 try:
diff --git a/Lib/idlelib/configHandler.py b/Lib/idlelib/configHandler.py
index 469d0e4..0a08de2 100644
--- a/Lib/idlelib/configHandler.py
+++ b/Lib/idlelib/configHandler.py
@@ -39,22 +39,19 @@
         self.file=cfgFile
         ConfigParser.__init__(self,defaults=cfgDefaults)
 
-    def Get(self, section, option, type=None, default=None):
+    def Get(self, section, option, type=None, default=None, raw=False):
         """
         Get an option value for given section/option or return default.
         If type is specified, return as type.
         """
-        if type=='bool':
-            getVal=self.getboolean
-        elif type=='int':
-            getVal=self.getint
-        else:
-            getVal=self.get
-        if self.has_option(section,option):
-            #return getVal(section, option, raw, vars, default)
-            return getVal(section, option)
-        else:
+        if not self.has_option(section, option):
             return default
+        if type=='bool':
+            return self.getboolean(section, option)
+        elif type=='int':
+            return self.getint(section, option)
+        else:
+            return self.get(section, option, raw=raw)
 
     def GetOptionList(self,section):
         """
@@ -219,7 +216,7 @@
         return userDir
 
     def GetOption(self, configType, section, option, default=None, type=None,
-                  warn_on_default=True):
+                  warn_on_default=True, raw=False):
         """
         Get an option value for given config type and given general
         configuration section/option or return a default. If type is specified,
@@ -233,9 +230,11 @@
 
         """
         if self.userCfg[configType].has_option(section,option):
-            return self.userCfg[configType].Get(section, option, type=type)
+            return self.userCfg[configType].Get(section, option,
+                                                type=type, raw=raw)
         elif self.defaultCfg[configType].has_option(section,option):
-            return self.defaultCfg[configType].Get(section, option, type=type)
+            return self.defaultCfg[configType].Get(section, option,
+                                                   type=type, raw=raw)
         else: #returning default, print warning
             if warn_on_default:
                 warning = ('\n Warning: configHandler.py - IdleConf.GetOption -\n'
diff --git a/Lib/idlelib/help.txt b/Lib/idlelib/help.txt
index 6d2ba2f..76cccf0 100644
--- a/Lib/idlelib/help.txt
+++ b/Lib/idlelib/help.txt
@@ -44,6 +44,10 @@
 	Find in Files... -- Open a search dialog box for searching files
 	Replace...       -- Open a search-and-replace dialog box
 	Go to Line       -- Ask for a line number and show that line
+	Show Calltip     -- Open a small window with function param hints
+	Show Completions -- Open a scroll window allowing selection keywords
+			    and attributes. (see '*TIPS*', below)
+	Show Parens	 -- Highlight the surrounding parenthesis
 	Expand Word      -- Expand the word you have typed to match another
 		            word in the same buffer; repeat to get a
                             different expansion
@@ -91,6 +95,7 @@
 	Code Context --	  Open a pane at the top of the edit window which
 			  shows the block context of the section of code
 			  which is scrolling off the top or the window.
+			  (Not present in Shell window.)
 
 Windows Menu:
 
@@ -138,8 +143,11 @@
 	Control-left/right Arrow moves by words in a strange but useful way.
 	Home/End go to begin/end of line.
 	Control-Home/End go to begin/end of file.
-	Some useful Emacs bindings (Control-a, Control-e, Control-k, etc.)
-		are inherited from Tcl/Tk.
+	Some useful Emacs bindings are inherited from Tcl/Tk:
+		Control-a     beginning of line
+		Control-e     end of line
+		Control-k     kill line (but doesn't put it in clipboard)
+		Control-l     center window around the insertion point
 	Standard Windows bindings may work on that platform.
 	Keybindings are selected in the Settings Dialog, look there.
 
@@ -155,6 +163,52 @@
 
         See also the indent/dedent region commands in the edit menu.
 
+Completions:
+
+	Completions are supplied for functions, classes, and attributes of
+	classes, both built-in and user-defined.  Completions are also provided
+	for filenames.
+
+	The AutoCompleteWindow (ACW) will open after a predefined delay
+	(default is two seconds) after a '.' or (in a string) an os.sep is
+	typed.  If after one of those characters (plus zero or more other
+	characters) you type a Tab the ACW will open immediately if a possible
+	continuation is found.
+
+	If there is only one possible completion for the characters entered, a
+	Tab will supply that completion without opening the ACW.
+
+	'Show Completions' will force open a completions window.  In an empty
+	string, this will contain the files in the current directory.  On a
+	blank line, it will contain the built-in and user-defined functions and
+	classes in the current name spaces, plus any modules imported.  If some
+	characters have been entered, the ACW will attempt to be more specific.
+
+	If string of characters is typed, the ACW selection will jump to the
+	entry most closely matching those characters. Entering a Tab will cause
+	the longest non-ambiguous match to be entered in the Edit window or
+	Shell.  Two Tabs in a row will supply the current ACW selection, as
+	will Return or a double click.  Cursor keys, Page Up/Down, mouse
+	selection, and the scrollwheel all operate on the ACW.
+
+	'Hidden' attributes can be accessed by typing the beginning of hidden
+	name after a '.'.  e.g. '_'.  This allows access to modules with
+	'__all__' set, or to class-private attributes.
+
+	Completions and the 'Expand Word' facility can save a lot of typing!
+
+	Completions are currently limited to those in the namespaces.  Names in
+	an Edit window which are not via __main__ or sys.modules will not be
+	found.  Run the module once with your imports to correct this
+	situation.  Note that IDLE itself places quite a few modules in
+	sys.modules, so much can be found by default, e.g. the re module.
+
+	If you don't like the ACW popping up unbidden, simply make the delay
+	longer or disable the extension.  OTOH, you could make the delay zero.
+
+	You could also switch off the CallTips extension.  (We will be adding
+	a delay to the call tip window.)
+
 Python Shell window:
 
 	Control-c interrupts executing command.
@@ -165,7 +219,7 @@
 
 	Alt-p retrieves previous command matching what you have typed.
 	Alt-n retrieves next.
-	      (These are Control-p, Control-n on the Mac)      
+	      (These are Control-p, Control-n on the Mac)
 	Return while cursor is on a previous command retrieves that command.
 	Expand word is also useful to reduce typing.
 
@@ -196,7 +250,7 @@
 	be changed using the Settings dialog.
 
 Command line usage:
-	
+
 	Enter idle -h at the command prompt to get a usage message.
 
 Running without a subprocess:
@@ -211,3 +265,18 @@
 	re-import any specific items (e.g. from foo import baz) if the changes
 	are to take effect.  For these reasons, it is preferable to run IDLE
 	with the default subprocess if at all possible.
+
+Extensions:
+
+	IDLE contains an extension facility.  See the beginning of
+	config-extensions.def in the idlelib directory for further information.
+	The default extensions are currently:
+
+		FormatParagraph
+		AutoExpand
+		ZoomHeight
+		ScriptBinding
+		CallTips
+		ParenMatch
+		AutoComplete
+		CodeContext