diff -r b75b4fdd62f8 Lib/idlelib/config-keys.def
--- a/Lib/idlelib/config-keys.def	Wed Jun 01 00:01:21 2016 -0500
+++ b/Lib/idlelib/config-keys.def	Wed Jun 01 10:29:26 2016 +0300
@@ -109,6 +109,57 @@ change-indentwidth=<Alt-Key-u>
 del-word-left=<Alt-Key-BackSpace>
 del-word-right=<Alt-Key-d>
 
+[IDLE Modern Unix]
+copy = <Control-Shift-Key-C> <Control-Key-Insert>
+cut = <Control-Key-x> <Shift-Key-Delete>
+paste = <Control-Key-v> <Shift-Key-Insert>
+beginning-of-line = <Key-Home>
+center-insert = <Control-Key-l>
+close-all-windows = <Control-Key-q>
+close-window = <Control-Key-w> <Control-Shift-Key-W>
+do-nothing = <Control-Key-F12>
+end-of-file = <Control-Key-d>
+history-next = <Alt-Key-n> <Meta-Key-n>
+history-previous = <Alt-Key-p> <Meta-Key-p>
+interrupt-execution = <Control-Key-c>
+view-restart = <Key-F6>
+restart-shell = <Control-Key-F6>
+open-class-browser = <Control-Key-b>
+open-module = <Control-Key-m>
+open-new-window = <Control-Key-n>
+open-window-from-file = <Control-Key-o>
+plain-newline-and-indent = <Control-Key-j>
+print-window = <Control-Key-p>
+python-context-help = <Shift-Key-F1>
+python-docs = <Key-F1>
+redo = <Control-Shift-Key-Z>
+remove-selection = <Key-Escape>
+save-copy-of-window-as-file = <Alt-Shift-Key-S>
+save-window-as-file = <Control-Shift-Key-S>
+save-window = <Control-Key-s>
+select-all = <Control-Key-a>
+toggle-auto-coloring = <Control-Key-slash>
+undo = <Control-Key-z>
+find = <Control-Key-f>
+find-again = <Key-F3>
+find-in-files = <Control-Shift-Key-f>
+find-selection = <Control-Key-h>
+replace = <Control-Key-r>
+goto-line = <Control-Key-g>
+smart-backspace = <Key-BackSpace>
+newline-and-indent = <Key-Return> <Key-KP_Enter>
+smart-indent = <Key-Tab>
+indent-region = <Control-Key-bracketright>
+dedent-region = <Control-Key-bracketleft>
+comment-region = <Control-Key-d>
+uncomment-region = <Control-Shift-Key-D>
+tabify-region = <Alt-Key-5>
+untabify-region = <Alt-Key-6>
+toggle-tabs = <Control-Key-T>
+change-indentwidth = <Alt-Key-u>
+del-word-left = <Control-Key-BackSpace>
+del-word-right = <Control-Key-Delete>
+
 [IDLE Classic Mac]
 copy=<Command-Key-c>
 cut=<Command-Key-x>
diff -r b75b4fdd62f8 Lib/idlelib/config-main.def
--- a/Lib/idlelib/config-main.def	Wed Jun 01 00:01:21 2016 -0500
+++ b/Lib/idlelib/config-main.def	Wed Jun 01 10:29:26 2016 +0300
@@ -70,7 +70,7 @@ name2=
 
 [Keys]
 default= 1
-name= IDLE Classic Windows
+name=
 
 [History]
 cyclic=1
diff -r b75b4fdd62f8 Lib/idlelib/config.py
--- a/Lib/idlelib/config.py	Wed Jun 01 00:01:21 2016 -0500
+++ b/Lib/idlelib/config.py	Wed Jun 01 10:29:26 2016 +0300
@@ -400,8 +400,16 @@ class IdleConf:
             return "IDLE Classic"
 
     def CurrentKeys(self):
-        "Return the name of the currently active key set."
-        return self.GetOption('main', 'Keys', 'name', default='')
+        """Return the name of the currently active key set."""
+        name = self.GetOption('main', 'Keys', 'name', default='')
+        if not name:
+            if sys.platform[:3] == 'win':
+                name = 'IDLE Classic Windows'
+            elif sys.platform == 'darwin':
+                name = 'IDLE Classic OSX'
+            else:
+                name = 'IDLE Modern Unix'
+        return name
 
     def GetExtensions(self, active_only=True, editor_only=False, shell_only=False):
         """Return extensions in default and user config-extensions files.