diff --git a/Makefile b/Makefile
index 1f483163..d5620851 100644
--- a/Makefile
+++ b/Makefile
@@ -40,7 +40,7 @@ rules:
 
 pot:
 	./scripts/all_games.py gettext > po/games.pot
-	xgettext --keyword=n_ -o po/pysol.pot \
+	xgettext --keyword=n_ --add-comments=TRANSLATORS: -o po/pysol.pot \
 		pysollib/*.py pysollib/*/*.py pysollib/*/*/*.py data/pysolfc.glade
 	set -e; \
 	for lng in ru de pl it; do \
diff --git a/pysollib/actions.py b/pysollib/actions.py
index 19fc611a..e2e28406 100644
--- a/pysollib/actions.py
+++ b/pysollib/actions.py
@@ -47,7 +47,7 @@ from pysollib.pysoltk import create_find_card_dialog
 from pysollib.pysoltk import create_solver_dialog
 from pysollib.settings import DEBUG
 from pysollib.settings import PACKAGE_URL, TITLE
-from pysollib.settings import TOP_TITLE
+from pysollib.settings import TOP_SIZE
 from pysollib.stats import FileStatsFormatter
 
 
@@ -381,7 +381,7 @@ class PysolMenubar(PysolMenubarTk):
         if self._cancelDrag():
             return
         if self.changed():
-            if not self.game.areYouSure(_("Quit ") + TITLE):
+            if not self.game.areYouSure(_("Quit %s") % TITLE):
                 return
         self.game.endGame()
         self.game.quitGame()
@@ -445,7 +445,7 @@ class PysolMenubar(PysolMenubarTk):
         if not self.game.gsaveinfo.bookmarks:
             return
         if not self.game.areYouSure(_("Clear bookmarks"),
-                                    _("Clear all bookmarks ?")):
+                                    _("Clear all bookmarks?")):
             return
         self.game.gsaveinfo.bookmarks = {}
         self.game.updateMenus()
@@ -457,7 +457,7 @@ class PysolMenubar(PysolMenubarTk):
             return
         if self.changed(restart=1):
             if not self.game.areYouSure(_("Restart game"),
-                                        _("Restart this game ?")):
+                                        _("Restart this game?")):
                 return
         self.game.restartGame()
 
@@ -501,10 +501,11 @@ class PysolMenubar(PysolMenubarTk):
         if self._cancelDrag(break_pause=False):
             return
         game, gi = self.game, self.game.gameinfo
-        t = " " + game.getGameNumber(format=1)
-        cc = _("Comments for %s:\n\n") % (gi.name + t)
+        kw = {'game': gi.name,
+              'id': game.getGameNumber(format=1)}
+        cc = _("Comments for %(game)s %(id)s:\n\n") % kw
         c = game.gsaveinfo.comment or cc
-        d = EditTextDialog(game.top, _("Comments for ")+t, text=c)
+        d = EditTextDialog(game.top, _("Comments for %(id)s") % kw, text=c)
         if d.status == 0 and d.button == 0:
             text = d.text
             if text.strip() == cc.strip():
@@ -525,8 +526,9 @@ class PysolMenubar(PysolMenubarTk):
                         text=_("Error while writing to file"))
                 else:
                     d = MfxMessageDialog(
-                        self.top, title=TITLE+_(" Info"), bitmap="info",
-                        text=_("Comments were appended to\n\n") + fn)
+                        self.top, title=_("%s Info") % TITLE, bitmap="info",
+                        text=_("Comments were appended to\n\n%(filename)s")
+                        % {'filename': fn})
         self._setCommentMenu(bool(game.gsaveinfo.comment))
 
     #
@@ -535,10 +537,10 @@ class PysolMenubar(PysolMenubarTk):
 
     def _mStatsSave(self, player, filename, write_method):
         if player is None:
-            text = _("Demo statistics")
+            text = _("Demo statistics were appended to\n\n%(filename)s")
             filename = filename + "_demo"
         else:
-            text = _("Your statistics")
+            text = _("Your statistics were appended to\n\n%(filename)s")
         filename = os.path.join(self.app.dn.config, filename + ".txt")
         filename = os.path.normpath(filename)
         try:
@@ -549,8 +551,8 @@ class PysolMenubar(PysolMenubarTk):
                                text=_("Error while writing to file"))
         else:
             MfxMessageDialog(
-                self.top, title=TITLE+_(" Info"), bitmap="info",
-                text=text + _(" were appended to\n\n") + filename)
+                self.top, title=_("%s Info") % TITLE, bitmap="info",
+                text=text % {'filename': filename})
 
     def mPlayerStats(self, *args, **kw):
         mode = kw.get("mode", 101)
@@ -564,31 +566,40 @@ class PysolMenubar(PysolMenubarTk):
             d = Struct(status=-1, button=-1)
             if demo:
                 player = None
-                p0, p1, p2 = TITLE+_(" Demo"), TITLE+_(" Demo "), ""
             else:
                 player = self.app.opt.player
-                p0, p1, p2 = player, "", _(" for ") + player
             n = self.game.gameinfo.name
+            # translation keywords
+            transkw = {'app': TITLE,
+                       'player': player,
+                       'game': n,
+                       'tops': TOP_SIZE}
             #
             if mode == 100:
                 d = Status_StatsDialog(self.top, game=self.game)
             elif mode == 101:
-                header = p1 + _("Statistics for ") + n
+                header = (_("%(app)s Demo Statistics for %(game)s") if demo
+                          else _("Statistics for %(game)s")) % transkw
                 d = SingleGame_StatsDialog(
                    self.top, header, self.app, player, gameid=self.game.id)
                 gameid = d.selected_game
             elif mode == 102:
-                header = p1 + _("Statistics") + p2
+                header = (_("%(app)s Demo Statistics") if demo
+                          else _("Statistics for %(player)s")) % transkw
                 d = AllGames_StatsDialog(self.top, header, self.app, player)
                 gameid = d.selected_game
             elif mode == 103:
-                header = p1 + _("Full log") + p2
+                header = (_("%(app)s Demo Full log") if demo
+                          else _("Full log for %(player)s")) % transkw
                 d = FullLog_StatsDialog(self.top, header, self.app, player)
             elif mode == 104:
-                header = p1 + _("Session log") + p2
+                header = (_("%(app)s Demo Session log") if demo
+                          else _("Session log for %(player)s")) % transkw
                 d = SessionLog_StatsDialog(self.top, header, self.app, player)
             elif mode == 105:
-                header = p1 + TOP_TITLE + _(" for ") + n
+                # TRANSLATORS: eg. top 10 or top 5 results for a certain game
+                header = (_("%(app)s Demo Top %(tops)d for %(game)s") if demo
+                          else _("Top %(tops)d for %(game)s")) % transkw
                 d = Top_StatsDialog(
                     self.top, header, self.app, player, gameid=self.game.id)
             elif mode == 106:
@@ -614,7 +625,8 @@ class PysolMenubar(PysolMenubarTk):
                 # reset all player stats
                 if self.game.areYouSure(
                     _("Reset all statistics"),
-                    _("Reset ALL statistics and logs for player\n%s ?") % p0,
+                    _("Reset ALL statistics and logs for player\n" +
+                      "%(player)s?") % transkw,
                     confirm=1, default=1
                 ):
                     self.app.stats.resetStats(player, 0)
@@ -624,8 +636,8 @@ class PysolMenubar(PysolMenubarTk):
                 # reset player stats for current game
                 if self.game.areYouSure(
                     _("Reset game statistics"),
-                    _('Reset statistics and logs ' +
-                        'for player\n%s\nand game\n%s ?') % (p0, n),
+                    _('Reset statistics and logs for player\n%(player)s\n'
+                      'and game\n%(game)s?') % transkw,
                     confirm=1, default=1
                 ):
                     self.app.stats.resetStats(player, self.game.id)
diff --git a/pysollib/app.py b/pysollib/app.py
index e5ddbdd6..3f7d9c0e 100644
--- a/pysollib/app.py
+++ b/pysollib/app.py
@@ -60,7 +60,7 @@ from pysollib.resource import Tile, TileManager
 from pysollib.settings import DEBUG
 from pysollib.settings import PACKAGE, VERSION_TUPLE, WIN_SYSTEM
 from pysollib.settings import TOOLKIT
-from pysollib.util import CARDSET, IMAGE_EXTENSIONS
+from pysollib.util import IMAGE_EXTENSIONS
 from pysollib.winsystems import TkSettings
 if TOOLKIT == 'tk':
     from pysollib.ui.tktile.solverdialog import destroy_solver_dialog
@@ -329,7 +329,8 @@ class Application:
             elif self.commandline.game is not None:
                 gameid = self.gdb.getGameByName(self.commandline.game)
                 if gameid is None:
-                    print_err(_("can't find game: ") + self.commandline.game)
+                    print_err(_("can't find game: %(game)s") % {
+                        'game': self.commandline.game})
                     sys.exit(-1)
                 else:
                     self.nextgame.id = gameid
@@ -668,7 +669,7 @@ class Application:
         if progress is None:
             self.wm_save_state()
             self.wm_withdraw()
-            title = _("Loading %s %s...") % (CARDSET, cs.name)
+            title = _("Loading cardset %s...") % cs.name
             color = self.opt.colors['table']
             if self.tabletile_index > 0:
                 color = "#008200"
@@ -678,7 +679,7 @@ class Application:
         images = Images(self.dataloader, cs)
         try:
             if not images.load(app=self, progress=progress):
-                raise Exception("Invalid or damaged "+CARDSET)
+                raise Exception("Invalid or damaged cardset")
             simages = SubsampledImages(images)
             if self.opt.save_cardsets:
                 c = self.cardsets_cache.get(cs.type)
@@ -710,8 +711,8 @@ class Application:
             # images.destruct()
             destruct(images)
             MfxExceptionDialog(
-                self.top, ex, title=CARDSET+_(" load error"),
-                text=_("Error while loading ")+CARDSET)
+                self.top, ex, title=_("Cardset load error"),
+                text=_("Error while loading cardset"))
         self.intro.progress = progress
         if r and self.menubar is not None:
             self.menubar.updateBackgroundImagesMenu()
@@ -806,14 +807,14 @@ class Application:
         #
         t = self.checkCompatibleCardsetType(gi, self.cardset)
         MfxMessageDialog(
-            self.top, title=_("Incompatible ")+CARDSET,
+            self.top, title=_("Incompatible cardset"),
             bitmap="warning",
-            text=_('''The currently selected %s %s
+            text=_('''The currently selected cardset %(cardset)s
 is not compatible with the game
-%s
+%(game)s
 
-Please select a %s type %s.
-''') % (CARDSET, self.cardset.name, gi.name, t[0], CARDSET),
+Please select a %(correct_type)s type cardset.
+''') % {'cardset': self.cardset.name, 'game': gi.name, 'correct_type': t[0]},
             strings=(_("&OK"),), default=0)
         cs = self.__selectCardsetDialog(t)
         if cs is None:
@@ -852,7 +853,7 @@ Please select a %s type %s.
 
     def __selectCardsetDialog(self, t):
         cs = self.selectCardset(
-            _("Please select a %s type %s") % (t[0], CARDSET),
+            _("Please select a %s type cardset") % t[0],
             self.cardset.index)
         return cs
 
@@ -1060,7 +1061,8 @@ Please select a %s type %s.
                 except Exception as ex:
                     if DEBUG:
                         traceback.print_exc()
-                    print_err(_("error loading plugin %s: %s") % (n, ex))
+                    print_err(_("error loading plugin %(file)s: %(err)s") %
+                              {'file': n, 'err': ex})
 
     #
     # init cardsets
diff --git a/pysollib/game/__init__.py b/pysollib/game/__init__.py
index e2f51afd..445d3ced 100644
--- a/pysollib/game/__init__.py
+++ b/pysollib/game/__init__.py
@@ -63,7 +63,7 @@ from pysollib.pysoltk import MfxExceptionDialog, MfxMessageDialog
 from pysollib.pysoltk import after, after_cancel, after_idle
 from pysollib.pysoltk import bind, wm_map
 from pysollib.settings import DEBUG
-from pysollib.settings import PACKAGE, TITLE, TOOLKIT, TOP_TITLE
+from pysollib.settings import PACKAGE, TITLE, TOOLKIT, TOP_SIZE
 from pysollib.settings import VERSION, VERSION_TUPLE
 from pysollib.struct_new import NewStruct
 
@@ -1310,7 +1310,7 @@ class Game(object):
             if not title:
                 title = TITLE
             if not text:
-                text = _("Discard current game ?")
+                text = _("Discard current game?")
             self.playSample("areyousure")
             d = MfxMessageDialog(self.top, title=title, text=text,
                                  bitmap="question",
@@ -1931,19 +1931,24 @@ class Game(object):
                 if ret:
                     if ret[0] and ret[1]:
                         top_msg = _(
-                            '''\nYou have reached\n''' +
-                            '# %d in the %s of playing time' +
-                            '\nand # %d in the %s of moves.') % \
-                            (ret[0], TOP_TITLE, ret[1], TOP_TITLE)
+                            '\nYou have reached\n# %(timerank)d in the top ' +
+                            '%(tops)d of playing time\nand # %(movesrank)d ' +
+                            'in the top %(tops)d of moves.') % {
+                                'timerank': ret[0],
+                                'movesrank': ret[1],
+                                'tops': TOP_SIZE}
                     elif ret[0]:        # playing time
                         top_msg = _(
-                            '''\nYou have reached\n''' +
-                            '''# %d in the %s of playing time.''') \
-                            % (ret[0], TOP_TITLE)
+                            '\nYou have reached\n# %(timerank)d in the top ' +
+                            '%(tops)d of playing time.') % {
+                                'timerank': ret[0],
+                                'tops': TOP_SIZE}
                     elif ret[1]:        # moves
                         top_msg = _(
-                            '''\nYou have reached\n''' +
-                            '# %d in the %s of moves.') % (ret[1], TOP_TITLE)
+                            '\nYou have reached\n# %(movesrank)d in the top ' +
+                            '%(tops)s of moves.') % {
+                                'movesrank': ret[1],
+                                'tops': TOP_SIZE}
                 return top_msg
         elif not demo:
             # only update the session log
@@ -1975,14 +1980,14 @@ class Game(object):
             self.finished = True
             self.playSample("gameperfect", priority=1000)
             self.winAnimation(perfect=1)
-            text = ungettext('''Your playing time is %s\nfor %d move.''',
-                             '''Your playing time is %s\nfor %d moves.''',
+            text = ungettext('Your playing time is %(time)s\nfor %(n)d move.',
+                             'Your playing time is %(time)s\nfor %(n)d moves.',
                              self.moves.index)
-            text = text % (time, self.moves.index)
+            text = text % {'time': time, 'n': self.moves.index}
+            congrats = _('Congratulations, this\nwas a truly perfect game!')
             d = MfxMessageDialog(
                 self.top, title=_("Game won"),
-                text=_('\nCongratulations, this\nwas a truly perfect game !' +
-                       '\n\n%s\n%s\n') % (text, top_msg),
+                text='\n' + congrats + '\n\n' + text + '\n' + top_msg + '\n',
                 strings=(_("&New game"), None, _("&Cancel")),
                 image=self.app.gimages.logos[5])
         elif status == 1:
@@ -1991,16 +1996,14 @@ class Game(object):
             self.finished = True
             self.playSample("gamewon", priority=1000)
             self.winAnimation()
-            text = ungettext('''Your playing time is %s\nfor %d move.''',
-                             '''Your playing time is %s\nfor %d moves.''',
+            text = ungettext('Your playing time is %(time)s\nfor %(n)d move.',
+                             'Your playing time is %(time)s\nfor %(n)d moves.',
                              self.moves.index)
-            text = text % (time, self.moves.index)
+            text = text % {'time': time, 'n': self.moves.index}
+            congrats = _('Congratulations, you did it!')
             d = MfxMessageDialog(
                 self.top, title=_("Game won"),
-                text=(
-                    _('\nCongratulations, you did it !\n\n%s\n%s\n') %
-                    (text, top_msg)
-                ),
+                text='\n' + congrats + '\n\n' + text + '\n' + top_msg + '\n',
                 strings=(_("&New game"), None, _("&Cancel")),
                 image=self.app.gimages.logos[4])
         elif self.gstats.updated < 0:
@@ -2522,7 +2525,8 @@ class Game(object):
                                  '\nGame solved in %d moves.\n',
                                  self.moves.index)
                 text = text % self.moves.index
-                d = MfxMessageDialog(self.top, title=TITLE+_(" Autopilot"),
+                d = MfxMessageDialog(self.top,
+                                     title=_("%s Autopilot") % TITLE,
                                      text=text,
                                      image=self.app.gimages.logos[4],
                                      strings=(s,),
@@ -2536,7 +2540,8 @@ class Game(object):
                 if DEBUG:
                     text += "\nplayer_moves: %d\ndemo_moves: %d\n" % \
                         (self.stats.player_moves, self.stats.demo_moves)
-                d = MfxMessageDialog(self.top, title=TITLE+_(" Autopilot"),
+                d = MfxMessageDialog(self.top,
+                                     title=_("%s Autopilot") % TITLE,
                                      text=text, bitmap=bitmap, strings=(s,),
                                      padx=30, timeout=timeout)
                 status = d.status
@@ -2550,7 +2555,8 @@ class Game(object):
                 s = self.app.miscrandom.choice(
                         (_("&Oh well"), _("&That's life"), _("&Hmm")))
                 # ??? accelerators
-                d = MfxMessageDialog(self.top, title=TITLE+_(" Autopilot"),
+                d = MfxMessageDialog(self.top,
+                                     title=_("%s Autopilot") % TITLE,
                                      text=_("\nThis won't come out...\n"),
                                      bitmap=bitmap, strings=(s,),
                                      padx=30, timeout=timeout)
@@ -2999,7 +3005,7 @@ class Game(object):
         if confirm and self.gsaveinfo.bookmarks.get(n):
             if not self.areYouSure(
                     _("Set bookmark"),
-                    _("Replace existing bookmark %d ?") % (n+1)):
+                    _("Replace existing bookmark %d?") % (n+1)):
                 return 0
         f = BytesIO()
         try:
@@ -3021,7 +3027,7 @@ class Game(object):
             confirm = self.app.opt.confirm
         if confirm:
             if not self.areYouSure(_("Goto bookmark"),
-                                   _("Goto bookmark %d ?") % (n+1)):
+                                   _("Goto bookmark %d?") % (n+1)):
                 return
         try:
             s, moves_index = bm
@@ -3143,9 +3149,9 @@ class Game(object):
         version_tuple = pload(tuple)
         validate(
             version_tuple >= (1, 0),
-            _('''Cannot load games saved with\n%s version %s''') % (
-                PACKAGE,
-                version))
+            _('Cannot load games saved with\n%(app)s version %(ver)s') % {
+                'app': PACKAGE,
+                'ver': version})
         game_version = 1
         bookmark = pload(int)
         validate(0 <= bookmark <= 2, err_txt)
diff --git a/pysollib/games/matriarchy.py b/pysollib/games/matriarchy.py
index 7803bf36..7a5430d3 100644
--- a/pysollib/games/matriarchy.py
+++ b/pysollib/games/matriarchy.py
@@ -120,7 +120,8 @@ class Matriarchy_Talon(WasteTalonStack):
             return
         WasteTalonStack.updateText(self, update_rounds=0)
         # t = "Round %d" % self.round
-        t = _("Round %d/%d") % (self.round, self.max_rounds)
+        t = _("Round %(round)d/%(max_rounds)d") % {
+            'round': self.round, 'max_rounds': self.max_rounds}
         self.texts.rounds.config(text=t)
         t = _("Deal %d") % self.DEAL[self.round-1]
         self.texts.misc.config(text=t)
diff --git a/pysollib/help.py b/pysollib/help.py
index 87bb8618..2d161553 100644
--- a/pysollib/help.py
+++ b/pysollib/help.py
@@ -40,17 +40,18 @@ from pysollib.settings import PACKAGE_URL, TITLE, TOOLKIT, VERSION
 def help_about(app, timeout=0, sound=True):
     if sound:
         app.audio.playSample("about")
-    t = _("A Python Solitaire Game Collection\n")
+    t = _("A Python Solitaire Game Collection")
     if app.miscrandom.random() < 0.8:
-        t = _("A World Domination Project\n")
+        t = _("A World Domination Project")
     strings = (_("&Nice"), _("&Credits..."))
     if timeout:
         strings = (_("&Enjoy"),)
     version = _("Version %s") % VERSION
-    d = PysolAboutDialog(app, app.top, title=_("About ") + TITLE,
+    d = PysolAboutDialog(app, app.top, title=_("About %s") % TITLE,
                          timeout=timeout,
                          text=_('''PySol Fan Club edition
-%s%s
+%(description)s
+%(versioninfo)s
 
 Copyright (C) 1998 - 2003 Markus F.X.J. Oberhumer.
 Copyright (C) 2003 Mt. Hood Playing Card Co.
@@ -60,7 +61,8 @@ All Rights Reserved.
 PySol is free software distributed under the terms
 of the GNU General Public License.
 
-For more information about this application visit''') % (t, version),
+For more information about this application visit''') %
+                         {'description': t, 'versioninfo': version},
                          url=PACKAGE_URL,
                          image=app.gimages.logos[2],
                          strings=strings, default=0,
@@ -86,7 +88,7 @@ def help_credits(app, timeout=0, sound=True):
         t = "kivy"
     d = MfxMessageDialog(
         app.top, title=_("Credits"), timeout=timeout,
-        text=TITLE+_(''' credits go to:
+        text=_('''%(app)s credits go to:
 
 Volker Weidner for getting me into Solitaire
 Guido van Rossum for the initial example program
@@ -95,8 +97,8 @@ Carl Larsson for the background music
 The Gnome AisleRiot team for parts of the documentation
 Natascha
 
-The Python, %s, SDL & Linux crews
-for making this program possible''') % t,
+The Python, %(gui_library)s, SDL & Linux crews
+for making this program possible''') % {'app': TITLE, 'gui_library': t},
         image=app.gimages.logos[3], image_side="right",
         separator=True)
     return d.status
@@ -122,8 +124,8 @@ def help_html(app, document, dir_, top=None):
             document, dir_ = "index.html", "html"
             help_html_index = app.dataloader.findFile(document, dir_)
     except EnvironmentError:
-        MfxMessageDialog(app.top, title=TITLE + _(" HTML Problem"),
-                         text=_("Cannot find help document\n") + document,
+        MfxMessageDialog(app.top, title=_("%s HTML Problem") % TITLE,
+                         text=_("Cannot find help document\n%s") % document,
                          bitmap="warning")
         return None
     # print doc, help_html_index
@@ -136,7 +138,7 @@ def help_html(app, document, dir_, top=None):
         viewer.display(doc, relpath=0)
     except Exception:
         # traceback.print_exc()
-        top = make_help_toplevel(app, title=TITLE+_(" Help"))
+        top = make_help_toplevel(app, title=_("%s Help") % TITLE)
         if top.winfo_screenwidth() < 800 or top.winfo_screenheight() < 600:
             # maximized = 1
             top.wm_minsize(300, 150)
diff --git a/pysollib/kivy/menubar.py b/pysollib/kivy/menubar.py
index d86e84b6..72de982a 100644
--- a/pysollib/kivy/menubar.py
+++ b/pysollib/kivy/menubar.py
@@ -51,7 +51,6 @@ from pysollib.mygettext import _
 from pysollib.pysoltk import connect_game_find_card_dialog
 from pysollib.settings import SELECT_GAME_MENU
 from pysollib.settings import TITLE
-from pysollib.util import CARDSET
 
 
 # ************************************************************************
@@ -177,34 +176,34 @@ class MainMenuDialog(LMenuDialog):
     def buildTree(self, tv, node):
         rg = tv.add_node(
             LTreeNode(
-                text="File",
+                text=_("File"),
                 command=self.make_game_command(self.menubar.mFileMenuDialog)))
         rg = tv.add_node(
             LTreeNode(
-                text="Games",
+                text=_("Games"),
                 command=self.make_game_command(
                     self.menubar.mSelectGameDialog)))
         rg = tv.add_node(
             LTreeNode(
-                text="Tools",
+                text=_("Tools"),
                 command=self.make_game_command(self.menubar.mEditMenuDialog)))
         rg = tv.add_node(
             LTreeNode(
-                text="Statistics",
+                text=_("Statistics"),
                 command=self.make_game_command(self.menubar.mGameMenuDialog)))
         rg = tv.add_node(
             LTreeNode(
-                text="Assist",
+                text=_("Assist"),
                 command=self.make_game_command(
                     self.menubar.mAssistMenuDialog)))
         rg = tv.add_node(
             LTreeNode(
-                text="Options",
+                text=_("Options"),
                 command=self.make_game_command(
                     self.menubar.mOptionsMenuDialog)))
         rg = tv.add_node(
             LTreeNode(
-                text="Help",
+                text=_("Help"),
                 command=self.make_game_command(self.menubar.mHelpMenuDialog)))
         del rg
 
@@ -225,7 +224,7 @@ class FileMenuDialog(LMenuDialog):
 
     def buildTree(self, tv, node):
         rg = tv.add_node(
-            LTreeNode(text='Recent games'))
+            LTreeNode(text=_('Recent games')))
         # Recent Liste
         recids = self.app.opt.recent_gameid
         # recgames = []
@@ -238,12 +237,12 @@ class FileMenuDialog(LMenuDialog):
                     LTreeNode(text=gi.name, command=command), rg)
 
         rg = tv.add_node(
-            LTreeNode(text='Favorite games'))
+            LTreeNode(text=_('Favorite games')))
         if rg:
             tv.add_node(LTreeNode(
-                text='<Add>', command=self.menubar.mAddFavor), rg)
+                text=_('<Add>'), command=self.menubar.mAddFavor), rg)
             tv.add_node(LTreeNode(
-                text='<Remove>', command=self.menubar.mDelFavor), rg)
+                text=_('<Remove>'), command=self.menubar.mDelFavor), rg)
 
             # Recent Liste
             favids = self.app.opt.favorite_gameid
@@ -289,36 +288,36 @@ class EditMenuDialog(LMenuDialog):  # Tools
 
     def buildTree(self, tv, node):
         tv.add_node(LTreeNode(
-            text='New game', command=self.menubar.mNewGame))
+            text=_('New game'), command=self.menubar.mNewGame))
         tv.add_node(LTreeNode(
-            text='Restart game', command=self.menubar.mRestart))
+            text=_('Restart game'), command=self.menubar.mRestart))
 
         tv.add_node(LTreeNode(
-            text='Undo', command=self.menubar.mUndo))
+            text=_('Undo'), command=self.menubar.mUndo))
         tv.add_node(LTreeNode(
-            text='Redo', command=self.menubar.mRedo))
+            text=_('Redo'), command=self.menubar.mRedo))
         tv.add_node(LTreeNode(
-            text='Redo all', command=self.menubar.mRedoAll))
+            text=_('Redo all'), command=self.menubar.mRedoAll))
 
         tv.add_node(LTreeNode(
-            text='Auto drop', command=self.menubar.mDrop))
+            text=_('Auto drop'), command=self.menubar.mDrop))
         tv.add_node(LTreeNode(
-            text='Shuffle tiles', command=self.menubar.mShuffle))
+            text=_('Shuffle tiles'), command=self.menubar.mShuffle))
         tv.add_node(LTreeNode(
-            text='Deal cards', command=self.menubar.mDeal))
+            text=_('Deal cards'), command=self.menubar.mDeal))
 
         self.addCheckNode(tv, None,
-                          'Pause',
+                          _('Pause'),
                           self.menubar.tkopt.pause,
                           self.menubar.mPause)
 
         tv.add_node(LTreeNode(
-            text='Load game', command=self.menubar.mOpen))
+            text=_('Load game'), command=self.menubar.mOpen))
         tv.add_node(LTreeNode(
-            text='Save game', command=self.menubar.mSaveAs))
+            text=_('Save game'), command=self.menubar.mSaveAs))
 
         tv.add_node(LTreeNode(
-            text='Help', command=self.menubar.mHelpRules))
+            text=_('Help'), command=self.menubar.mHelpRules))
 
         # -------------------------------------------
         # TBD ?
@@ -369,7 +368,7 @@ class GameMenuDialog(LMenuDialog):
 
     def buildTree(self, tv, node):
         tv.add_node(LTreeNode(
-            text='Current game ...',
+            text=_('Current game...'),
             command=self.make_command(101, self.menubar.mPlayerStats)), None)
 
         # tv.add_node(LTreeNode(
@@ -432,16 +431,16 @@ class AssistMenuDialog(LMenuDialog):
 
     def buildTree(self, tv, node):
         tv.add_node(LTreeNode(
-            text='Hint', command=self.menubar.mHint))
+            text=_('Hint'), command=self.menubar.mHint))
 
         tv.add_node(LTreeNode(
-            text='Highlight piles', command=self.menubar.mHighlightPiles))
+            text=_('Highlight piles'), command=self.menubar.mHighlightPiles))
 
         # tv.add_node(LTreeNode(
         #   text='Find Card', command=self.menubar.mFindCard))
 
         tv.add_node(LTreeNode(
-            text='Demo', command=self.menubar.mDemo))
+            text=_('Demo'), command=self.menubar.mDemo))
 
         # -------------------------------------------
         # TBD. How ?
@@ -507,27 +506,27 @@ class OptionsMenuDialog(LMenuDialog):
         # Automatic play settings
 
         rg = tv.add_node(
-            LTreeNode(text='Automatic play'))
+            LTreeNode(text=_('Automatic play')))
         if rg:
             self.addCheckNode(tv, rg,
-                              'Auto face up',
+                              _('Auto face up'),
                               self.menubar.tkopt.autofaceup,
                               self.menubar.mOptAutoFaceUp)
 
             self.addCheckNode(tv, rg,
-                              'Auto drop',
+                              _('Auto drop'),
                               self.menubar.tkopt.autodrop,
                               self.menubar.mOptAutoDrop)
 
             self.addCheckNode(tv, rg,
-                              'Auto deal',
+                              _('Auto deal'),
                               self.menubar.tkopt.autodeal,
                               self.menubar.mOptAutoDeal)
 
             # submenu.add_separator()
 
             self.addCheckNode(tv, rg,
-                              'Quick play',
+                              _('Quick play'),
                               self.menubar.tkopt.quickplay,
                               self.menubar.mOptQuickPlay)
 
@@ -535,57 +534,57 @@ class OptionsMenuDialog(LMenuDialog):
         # Player assistance
 
         rg = tv.add_node(
-            LTreeNode(text='Assist level'))
+            LTreeNode(text=_('Assist level')))
         if rg:
             self.addCheckNode(tv, rg,
-                              'Enable undo',
+                              _('Enable undo'),
                               self.menubar.tkopt.undo,
                               self.menubar.mOptEnableUndo)
 
             self.addCheckNode(tv, rg,
-                              'Enable bookmarks',
+                              _('Enable bookmarks'),
                               self.menubar.tkopt.bookmarks,
                               self.menubar.mOptEnableBookmarks)
 
             self.addCheckNode(tv, rg,
-                              'Enable hint',
+                              _('Enable hint'),
                               self.menubar.tkopt.hint,
                               self.menubar.mOptEnableHint)
 
             self.addCheckNode(tv, rg,
-                              'Enable shuffle',
+                              _('Enable shuffle'),
                               self.menubar.tkopt.shuffle,
                               self.menubar.mOptEnableShuffle)
 
             self.addCheckNode(tv, rg,
-                              'Enable highlight piles',
+                              _('Enable highlight piles'),
                               self.menubar.tkopt.highlight_piles,
                               self.menubar.mOptEnableHighlightPiles)
 
             self.addCheckNode(tv, rg,
-                              'Enable highlight cards',
+                              _('Enable highlight cards'),
                               self.menubar.tkopt.highlight_cards,
                               self.menubar.mOptEnableHighlightCards)
 
             self.addCheckNode(tv, rg,
-                              'Enable highlight same rank',
+                              _('Enable highlight same rank'),
                               self.menubar.tkopt.highlight_samerank,
                               self.menubar.mOptEnableHighlightSameRank)
 
             self.addCheckNode(tv, rg,
-                              'Highlight no matching',
+                              _('Highlight no matching'),
                               self.menubar.tkopt.highlight_not_matching,
                               self.menubar.mOptEnableHighlightNotMatching)
 
             # submenu.add_separator()
 
             self.addCheckNode(tv, rg,
-                              'Show removed tiles (in Mahjongg games)',
+                              _('Show removed tiles (in Mahjongg games)'),
                               self.menubar.tkopt.mahjongg_show_removed,
                               self.menubar.mOptMahjonggShowRemoved)
 
             self.addCheckNode(tv, rg,
-                              'Show hint arrow (in Shisen-Sho games)',
+                              _('Show hint arrow (in Shisen-Sho games)'),
                               self.menubar.tkopt.shisen_show_hint,
                               self.menubar.mOptShisenShowHint)
 
@@ -595,154 +594,154 @@ class OptionsMenuDialog(LMenuDialog):
         # Sound options
 
         rg = tv.add_node(
-            LTreeNode(text='Sound'))
+            LTreeNode(text=_('Sound')))
         if rg:
             self.addCheckNode(tv, rg,
-                              'Enable',
+                              _('Enable'),
                               self.menubar.tkopt.sound,
                               self.menubar.mOptSoundDialog)
 
             rg1 = tv.add_node(
-                LTreeNode(text='Volume'), rg)
+                LTreeNode(text=_('Volume')), rg)
             if rg1:
                 self.addRadioNode(tv, rg1,
-                                  '100%',
+                                  _('100%'),
                                   self.menubar.tkopt.sound_sample_volume, 100,
                                   self.menubar.mOptSoundSampleVol)
                 self.addRadioNode(tv, rg1,
-                                  '75%',
+                                  _('75%'),
                                   self.menubar.tkopt.sound_sample_volume, 75,
                                   self.menubar.mOptSoundSampleVol)
                 self.addRadioNode(tv, rg1,
-                                  '50%',
+                                  _('50%'),
                                   self.menubar.tkopt.sound_sample_volume, 50,
                                   self.menubar.mOptSoundSampleVol)
                 self.addRadioNode(tv, rg1,
-                                  '25%',
+                                  _('25%'),
                                   self.menubar.tkopt.sound_sample_volume, 25,
                                   self.menubar.mOptSoundSampleVol)
 
             rg1 = tv.add_node(
-                LTreeNode(text='Samples'), rg)
+                LTreeNode(text=_('Samples')), rg)
             if rg1:
                 key = 'areyousure'
                 self.addCheckNode(
                     tv, rg1,
-                    'are you sure',
+                    _('are you sure'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'autodrop'
                 self.addCheckNode(
                     tv, rg1,
-                    'auto drop',
+                    _('auto drop'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'autoflip'
                 self.addCheckNode(
                     tv, rg1,
-                    'auto flip',
+                    _('auto flip'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'autopilotlost'
                 self.addCheckNode(
                     tv, rg1,
-                    'auto pilot lost',
+                    _('auto pilot lost'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'autopilotwon'
                 self.addCheckNode(
                     tv, rg1,
-                    'auto pilot won',
+                    _('auto pilot won'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'deal'
                 self.addCheckNode(
                     tv, rg1,
-                    'deal',
+                    _('deal'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'dealwaste'
                 self.addCheckNode(
                     tv, rg1,
-                    'deal waste',
+                    _('deal waste'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'droppair'
                 self.addCheckNode(
                     tv, rg1,
-                    'drop pair',
+                    _('drop pair'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'drop'
                 self.addCheckNode(
                     tv, rg1,
-                    'drop',
+                    _('drop'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'flip'
                 self.addCheckNode(
                     tv, rg1,
-                    'flip',
+                    _('flip'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'move'
                 self.addCheckNode(
                     tv, rg1,
-                    'move',
+                    _('move'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'nomove'
                 self.addCheckNode(
                     tv, rg1,
-                    'no move',
+                    _('no move'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'redo'
                 self.addCheckNode(
                     tv, rg1,
-                    'redo',
+                    _('redo'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'startdrag'
                 self.addCheckNode(
                     tv, rg1,
-                    'start drag',
+                    _('start drag'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'turnwaste'
                 self.addCheckNode(
                     tv, rg1,
-                    'turn waste',
+                    _('turn waste'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'undo'
                 self.addCheckNode(
                     tv, rg1,
-                    'undo',
+                    _('undo'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'gamefinished'
                 self.addCheckNode(
                     tv, rg1,
-                    'game finished',
+                    _('game finished'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'gamelost'
                 self.addCheckNode(
                     tv, rg1,
-                    'game lost',
+                    _('game lost'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'gameperfect'
                 self.addCheckNode(
                     tv, rg1,
-                    'game perfect',
+                    _('game perfect'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
                 key = 'gamewon'
                 self.addCheckNode(
                     tv, rg1,
-                    'game won',
+                    _('game won'),
                     self.menubar.tkopt.sound_sample_vars[key],
                     self.make_vars_command(self.menubar.mOptSoundSample, key))
 
@@ -750,7 +749,7 @@ class OptionsMenuDialog(LMenuDialog):
         # Cardsets and card backside options
 
         rg = tv.add_node(
-            LTreeNode(text='Cardsets'))
+            LTreeNode(text=_('Cardsets')))
         if rg:
             self.menubar.tkopt.cardset.set(self.app.cardset.index)
 
@@ -790,45 +789,45 @@ class OptionsMenuDialog(LMenuDialog):
         # Table background settings
 
         rg = tv.add_node(
-            LTreeNode(text='Table'))
+            LTreeNode(text=_('Table')))
         if rg:
             rg1 = tv.add_node(
-                LTreeNode(text='Solid colors'), rg)
+                LTreeNode(text=_('Solid colors')), rg)
             if rg1:
                 key = 'table'
                 self.addRadioNode(
                     tv, rg1,
-                    'Blue',
+                    _('Blue'),
                     self.menubar.tkopt.color_vars[key], '#0082df',
                     self.menubar.mOptTableColor)
                 self.addRadioNode(
                     tv, rg1,
-                    'Green',
+                    _('Green'),
                     self.menubar.tkopt.color_vars[key], '#008200',
                     self.menubar.mOptTableColor)
                 self.addRadioNode(
                     tv, rg1,
-                    'Navy',
+                    _('Navy'),
                     self.menubar.tkopt.color_vars[key], '#000086',
                     self.menubar.mOptTableColor)
                 self.addRadioNode(
                     tv, rg1,
-                    'Olive',
+                    _('Olive'),
                     self.menubar.tkopt.color_vars[key], '#868200',
                     self.menubar.mOptTableColor)
                 self.addRadioNode(
                     tv, rg1,
-                    'Orange',
+                    _('Orange'),
                     self.menubar.tkopt.color_vars[key], '#f79600',
                     self.menubar.mOptTableColor)
                 self.addRadioNode(
                     tv, rg1,
-                    'Teal',
+                    _('Teal'),
                     self.menubar.tkopt.color_vars[key], '#008286',
                     self.menubar.mOptTableColor)
 
             rg1 = tv.add_node(
-                LTreeNode(text='Tiles and Images'), rg)
+                LTreeNode(text=_('Tiles and Images')), rg)
 
             if rg1:
                 tm = self.app.tabletile_manager
@@ -848,30 +847,30 @@ class OptionsMenuDialog(LMenuDialog):
         # Card view options
 
         rg = tv.add_node(
-            LTreeNode(text='Card view'))
+            LTreeNode(text=_('Card view')))
         if rg:
             self.addCheckNode(tv, rg,
-                              'Card shadow',
+                              _('Card shadow'),
                               self.menubar.tkopt.shadow,
                               self.menubar.mOptShadow)
 
             self.addCheckNode(tv, rg,
-                              'Shade legal moves',
+                              _('Shade legal moves'),
                               self.menubar.tkopt.shade,
                               self.menubar.mOptShade)
 
             self.addCheckNode(tv, rg,
-                              'Negative cards bottom',
+                              _('Negative cards bottom'),
                               self.menubar.tkopt.negative_bottom,
                               self.menubar.mOptNegativeBottom)
 
             self.addCheckNode(tv, rg,
-                              'Shrink face-down cards',
+                              _('Shrink face-down cards'),
                               self.menubar.tkopt.shrink_face_down,
                               self.menubar.mOptShrinkFaceDown)
 
             self.addCheckNode(tv, rg,
-                              'Shade filled stacks',
+                              _('Shade filled stacks'),
                               self.menubar.tkopt.shade_filled_stacks,
                               self.menubar.mOptShadeFilledStacks)
 
@@ -879,47 +878,47 @@ class OptionsMenuDialog(LMenuDialog):
         # Animation settins
 
         rg = tv.add_node(
-            LTreeNode(text='Animations'))
+            LTreeNode(text=_('Animations')))
         if rg:
             self.addRadioNode(tv, rg,
-                              'None',
+                              _('None'),
                               self.menubar.tkopt.animations, 0,
                               self.menubar.mOptAnimations)
 
             self.addRadioNode(tv, rg,
-                              'Very fast',
+                              _('Very fast'),
                               self.menubar.tkopt.animations, 1,
                               self.menubar.mOptAnimations)
 
             self.addRadioNode(tv, rg,
-                              'Fast',
+                              _('Fast'),
                               self.menubar.tkopt.animations, 2,
                               self.menubar.mOptAnimations)
 
             self.addRadioNode(tv, rg,
-                              'Medium',
+                              _('Medium'),
                               self.menubar.tkopt.animations, 3,
                               self.menubar.mOptAnimations)
 
             self.addRadioNode(tv, rg,
-                              'Slow',
+                              _('Slow'),
                               self.menubar.tkopt.animations, 4,
                               self.menubar.mOptAnimations)
 
             self.addRadioNode(tv, rg,
-                              'Very slow',
+                              _('Very slow'),
                               self.menubar.tkopt.animations, 5,
                               self.menubar.mOptAnimations)
 
             # submenu.add_separator()
 
             self.addCheckNode(tv, rg,
-                              'Redeal animation',
+                              _('Redeal animation'),
                               self.menubar.tkopt.redeal_animation,
                               self.menubar.mRedealAnimation)
 
             self.addCheckNode(tv, rg,
-                              'Winning animation',
+                              _('Winning animation'),
                               self.menubar.tkopt.win_animation,
                               self.menubar.mWinAnimation)
 
@@ -927,15 +926,15 @@ class OptionsMenuDialog(LMenuDialog):
         # Touch mode settings
 
         rg = tv.add_node(
-            LTreeNode(text='Touch mode'))
+            LTreeNode(text=_('Touch mode')))
         if rg:
             self.addRadioNode(tv, rg,
-                              'Drag-and-Drop',
+                              _('Drag-and-Drop'),
                               self.menubar.tkopt.mouse_type, 'drag-n-drop',
                               self.menubar.mOptMouseType)
 
             self.addRadioNode(tv, rg,
-                              'Point-and-Click',
+                              _('Point-and-Click'),
                               self.menubar.tkopt.mouse_type, 'point-n-click',
                               self.menubar.mOptMouseType)
 
@@ -969,10 +968,10 @@ class OptionsMenuDialog(LMenuDialog):
         # Toolbar options
 
         rg = tv.add_node(
-            LTreeNode(text='Toolbar'))
+            LTreeNode(text=_('Toolbar')))
         if rg:
             self.addRadioNode(tv, rg,
-                              'Hide',
+                              _('Hide'),
                               self.menubar.tkopt.toolbar, 0,
                               self.menubar.mOptToolbar)
 
@@ -987,11 +986,11 @@ class OptionsMenuDialog(LMenuDialog):
             #   self.menubar.mOptToolbar)
 
             self.addRadioNode(tv, rg,
-                              'Left',
+                              _('Left'),
                               self.menubar.tkopt.toolbar, 3,
                               self.menubar.mOptToolbar)
             self.addRadioNode(tv, rg,
-                              'Right',
+                              _('Right'),
                               self.menubar.tkopt.toolbar, 4,
                               self.menubar.mOptToolbar)
 
@@ -1028,12 +1027,12 @@ class OptionsMenuDialog(LMenuDialog):
         #   self.menubar.mOptDemoLogo)
 
         self.addCheckNode(tv, None,
-                          'Startup splash screen',
+                          _('Startup splash screen'),
                           self.menubar.tkopt.splashscreen,
                           self.menubar.mOptSplashscreen)
 
         self.addCheckNode(tv, None,
-                          'Winning splash',
+                          _('Winning splash'),
                           self.menubar.tkopt.display_win_message,
                           self.menubar.mWinDialog)
 
@@ -1056,23 +1055,23 @@ class HelpMenuDialog(LMenuDialog):
     def buildTree(self, tv, node):
         tv.add_node(
             LTreeNode(
-                text='Contents',
+                text=_('Contents'),
                 command=self.make_help_command(self.menubar.mHelp)))
         tv.add_node(
             LTreeNode(
-                text='How to play',
+                text=_('How to play'),
                 command=self.make_help_command(self.menubar.mHelpHowToPlay)))
         tv.add_node(
             LTreeNode(
-                text='Rules for this game',
+                text=_('Rules for this game'),
                 command=self.make_help_command(self.menubar.mHelpRules)))
         tv.add_node(
             LTreeNode(
-                text='License terms',
+                text=_('License terms'),
                 command=self.make_help_command(self.menubar.mHelpLicense)))
         tv.add_node(
             LTreeNode(
-                text='About' + TITLE + '...',
+                text=_('About %s...') % TITLE,
                 command=self.make_help_command(self.menubar.mHelpAbout)))
 
         # tv.add_node(LTreeNode(
@@ -1346,7 +1345,7 @@ class PysolMenubarTk:
 
         # LMainMenuDialog()
         LMenuItem(self.__menubar.menu,
-                  text="Menu", command=self.mMainMenuDialog)
+                  text=_("Menu"), command=self.mMainMenuDialog)
 
         MfxMenubar.addPath = None
 
@@ -1574,7 +1573,8 @@ class PysolMenubarTk:
         menu.delete(0, 'last')
 
         if len(games) == 0:
-            menu.add_radiobutton(label='<none>', name=None, state='disabled')
+            menu.add_radiobutton(label=_('<none>'), name=None,
+                                 state='disabled')
         elif len(games) > self.__cb_max * 4:
             games.sort(lambda a, b: cmp2(a.name, b.name))
             self._addSelectAllGameSubMenu(games, menu,
@@ -1791,8 +1791,9 @@ class PysolMenubarTk:
     #
 
     DEFAULTEXTENSION = ".pso"
-    FILETYPES = ((TITLE + " files", "*" + DEFAULTEXTENSION),
-                 ("All files", "*"))
+    # TRANSLATORS: Usually, 'PySol files'
+    FILETYPES = ((_("%s files") % TITLE, "*" + DEFAULTEXTENSION),
+                 (_("All files"), "*"))
 
     def mAddFavor(self, *event):
         gameid = self.app.game.id
@@ -2066,10 +2067,9 @@ class PysolMenubarTk:
         # if os.name == "posix":
         strings, default = (None, _("&Load"), _(
             "&Cancel"), _("&Info..."), ), 1
-        t = CARDSET
         key = self.app.nextgame.cardset.index
         d = SelectCardsetDialogWithPreview(
-                self.top, title=_("Select ") + t,
+                self.top, title=_("Select cardset"),
                 app=self.app, manager=self.app.cardset_manager, key=key,
                 strings=strings, default=default)
 
diff --git a/pysollib/kivy/selectgame.py b/pysollib/kivy/selectgame.py
index f333e518..7cbeab5e 100644
--- a/pysollib/kivy/selectgame.py
+++ b/pysollib/kivy/selectgame.py
@@ -165,7 +165,7 @@ class SelectGameData(SelectDialogTreeData):
             if name is None or not list(filter(
                     select_func, self.all_games_gi)):
                 continue
-            name = _("New games in v. ") + name
+            name = _("New games in v. %(version)s") % {'version': name}
             gg.append(SelectGameNode(None, name, select_func))
         if 1 and gg:
             s_by_pysol_version = SelectGameNode(None, _("by PySol version"),
diff --git a/pysollib/kivy/tkhtml.py b/pysollib/kivy/tkhtml.py
index 4c545216..152b281c 100644
--- a/pysollib/kivy/tkhtml.py
+++ b/pysollib/kivy/tkhtml.py
@@ -406,7 +406,7 @@ class HTMLViewer:
         # self.defcursor = 'xterm'
         self.handcursor = "hand2"
 
-        self.title = "Browser"
+        self.title = _("Browser")
         self.window = None
         self.running = False
 
@@ -431,11 +431,11 @@ class HTMLViewer:
         #   BoxLayout(orientation='horizontal', size_hint=(1.0, 0.1))
 
         # create buttons
-        self.homeButton = HTMLButton(text="Index", on_release=self.goHome)
-        self.backButton = HTMLButton(text="Back", on_release=self.goBack)
+        self.homeButton = HTMLButton(text=_("Index"), on_release=self.goHome)
+        self.backButton = HTMLButton(text=_("Back"), on_release=self.goBack)
         self.forwardButton = HTMLButton(
-            text="Forward", on_release=self.goForward)
-        self.closeButton = HTMLButton(text="Close", on_release=self.goHome)
+            text=_("Forward"), on_release=self.goForward)
+        self.closeButton = HTMLButton(text=_("Close"), on_release=self.goHome)
 
         '''
         buttonline.add_widget(self.homeButton)
@@ -683,7 +683,8 @@ class HTMLViewer:
             self.display(self.home, relpath=0)
 
     def errorDialog(self, msg):
-        MfxMessageDialog(self.parent, title=TITLE + " HTML Problem",
+        MfxMessageDialog(self.parent,
+                         title=_("%s HTML Problem") % TITLE,
                          text=msg,
                          # bitmap="warning"
                          # FIXME: this interp don't have images
diff --git a/pysollib/kivy/tkstats.py b/pysollib/kivy/tkstats.py
index f35475db..f5378bb7 100644
--- a/pysollib/kivy/tkstats.py
+++ b/pysollib/kivy/tkstats.py
@@ -172,8 +172,11 @@ class SingleGame_StatsDialog(MfxDialog):
 
         print('Stats(p): won=%s, lost=%s' % (won, lost))
 
-        text1 = 'Total:\n   won: %s ... %s%%\n   lost: %s ... %s%%\n\n' % (
-            won, int(round(100.0 * pwon)), lost, int(round(100.0 * plost)))
+        text1 = _('Total:\n' +
+                  '   won: %(won)s ... %(percentwon)s%%\n' +
+                  '   lost: %(lost)s ... %(percentlost)s%%\n\n') % dict(
+            won=won, percentwon=int(round(100.0 * pwon)),
+            lost=lost, percentlost=int(round(100.0 * plost)))
 
 #        createChart(app, won, lost, _("Total"))
         won, lost = app.stats.getSessionStats(player, gameid)
@@ -181,9 +184,11 @@ class SingleGame_StatsDialog(MfxDialog):
 
         print('Stats(s): won=%s, lost=%s' % (won, lost))
 
-        text2 = \
-            'Current Session:\n   won: %s ... %s%%\n   lost: %s ... %s%%\n' % \
-            (won, int(round(100.0 * pwon)), lost, int(round(100.0 * plost)))
+        text2 = _('Current Session:\n' +
+                  '   won: %(won)s ... %(percentwon)s%%\n' +
+                  '   lost: %(lost)s ... %(percentlost)s%%\n') % dict(
+            won=won, percentwon=(round(100.0 * pwon)),
+            lost=lost, percentlost=int(round(100.0 * plost)))
         # text2 = 'Current Session:\n   won=%s, lost=%s\n' % (won, lost)
 
 #        createChart(app, won, lost, _("Current session"))
diff --git a/pysollib/kivy/tkwidget.py b/pysollib/kivy/tkwidget.py
index cc59b864..3fb86337 100644
--- a/pysollib/kivy/tkwidget.py
+++ b/pysollib/kivy/tkwidget.py
@@ -167,10 +167,10 @@ class MfxMessageDialog(MfxDialog):
 
         # LB
         # nicht automatisch ein neues spiel laden.
-        if (title == "Game won"):
+        if (title == _("Game won")):
             self.status = 1
             # self.button = 0
-        if (title == "Game finished"):
+        if (title == _("Game finished")):
             self.status = 1
             # self.button =
 
@@ -180,7 +180,7 @@ class MfxMessageDialog(MfxDialog):
 
 
 class MfxExceptionDialog(MfxMessageDialog):
-    def __init__(self, parent, ex, title="Error", **kw):
+    def __init__(self, parent, ex, title=_("Error"), **kw):
         kw = KwStruct(kw, bitmap="error")
         text = kw.get("text", "")
         if not text.endswith("\n"):
diff --git a/pysollib/kivy/toolbar.py b/pysollib/kivy/toolbar.py
index dc16ebf8..06231aec 100644
--- a/pysollib/kivy/toolbar.py
+++ b/pysollib/kivy/toolbar.py
@@ -203,7 +203,7 @@ class PysolToolbarTk(BoxLayout):
             # (n_("Statistics"), self.mPlayerStats, _("View statistics")),
             (n_("Rules"),    self.mHelpRules, _("Rules for this game")),
             (None,           None,            None),
-            (n_("Quit"),     self.mHoldAndQuit,      _("Quit ") + TITLE),
+            (n_("Quit"),     self.mHoldAndQuit,      _("Quit %s") % TITLE),
         ):
             if label is None:
                 # sep = self._createSeparator()
diff --git a/pysollib/main.py b/pysollib/main.py
index 5a7561fc..7375abfc 100644
--- a/pysollib/main.py
+++ b/pysollib/main.py
@@ -56,25 +56,25 @@ if TOOLKIT == 'kivy':
     def fatal_no_cardsets(app):
         app.wm_withdraw()
         MfxMessageDialog(app.top, title=_("%s installation error") % TITLE,
-                         text=_('''No cardsets were found !!!
+                         text=_('''No cardsets were found!!!
 
 Cardsets should be installed into:
-%s/cardsets/
+%(dir)s
 
-Please check your %s installation.
-''') % (getprefdir(PACKAGE), TITLE),
+Please check your %(app)s installation.
+''') % {'dir': getprefdir(PACKAGE) + '/cardsets/', 'app': TITLE},
             bitmap="error", strings=(_("&Quit"),))
 else:
     def fatal_no_cardsets(app):
         app.wm_withdraw()
         MfxMessageDialog(app.top, title=_("%s installation error") % TITLE,
-                         text=_('''No cardsets were found !!!
+                         text=_('''No cardsets were found!!!
 
 Main data directory is:
-%s
+%(dir)s
 
-Please check your %s installation.
-''') % (app.dataloader.dir, TITLE),
+Please check your %(app)s installation.
+''') % {'dir': app.dataloader.dir, 'app': TITLE},
                      bitmap="error", strings=(_("&Quit"),))
 
 
@@ -93,8 +93,8 @@ def parse_option(argv):
                                        "sound-mod=",
                                        "help"])
     except getopt.GetoptError as err:
-        print_err(_("%s\ntry %s --help for more information") %
-                  (err, prog_name), 0)
+        print_err(err + "\n" + _("try %s --help for more information") %
+                  prog_name, 0)
         return None
     opts = {"help": False,
             "deal": None,
@@ -303,13 +303,14 @@ def pysol_init(app, args):
         app.intro.progress.destroy()
         d = MfxMessageDialog(top, title=_("%s installation error") % TITLE,
                              text=_('''
-No games were found !!!
+No games were found!!!
 
 Main data directory is:
-%s
+%(dir)s
 
-Please check your %s installation.
-''') % (app.dataloader.dir, TITLE), bitmap="error", strings=(_("&Quit"),))
+Please check your %(app)s installation.
+''') % {'dir': app.dataloader.dir, 'app': TITLE},
+                             bitmap="error", strings=(_("&Quit"),))
         return 1
 
     # init cardsets
diff --git a/pysollib/pysolgtk/selectgame.py b/pysollib/pysolgtk/selectgame.py
index 7cd74648..5fd097db 100644
--- a/pysollib/pysolgtk/selectgame.py
+++ b/pysollib/pysolgtk/selectgame.py
@@ -290,7 +290,7 @@ class SelectGameDialogWithPreview(MfxDialog):
         for version, vg in GI.GAMES_BY_PYSOL_VERSION:
             def selecter(gi, vg=vg):
                 return gi.id in vg
-            label = _("New games in v. ") + version
+            label = _("New games in v. %(version)s") % {'version': version}
             data.append((label, selecter))
         self._addGamesFromData(data, store, None,
                                _("by PySol version"), all_games)
@@ -423,7 +423,7 @@ class SelectGameDialogWithPreview(MfxDialog):
         # self.top.wm_title(
         #   "Select Game - " + self.app.getGameTitleName(gameid))
         title = self.app.getGameTitleName(gameid)
-        self.set_title(_("Playable Preview - ") + title)
+        self.set_title(_("Playable Preview - %(game)s") % {'game': title})
         #
         self.preview_game = gi.gameclass(gi)
         self.preview_game.createPreview(self.preview_app)
diff --git a/pysollib/pysolgtk/tkhtml.py b/pysollib/pysolgtk/tkhtml.py
index 00ffe812..798efda2 100644
--- a/pysollib/pysolgtk/tkhtml.py
+++ b/pysollib/pysolgtk/tkhtml.py
@@ -434,13 +434,13 @@ class HTMLViewer:
         for p in REMOTE_PROTOCOLS:
             if url.startswith(p):
                 if not openURL(url):
-                    self.errorDialog(TITLE + _('''HTML limitation:
-The %s protocol is not supported yet.
+                    self.errorDialog(_('''%(app)s HTML limitation:
+The %(protocol)s protocol is not supported yet.
 
 Please use your standard web browser
 to open the following URL:
-%s
-''') % (p, url))
+%(url)s
+''') % {'app': TITLE, 'protocol': p, 'url': url})
                 return
 
         # locate the file relative to the current url
diff --git a/pysollib/pysolgtk/tkstats.py b/pysollib/pysolgtk/tkstats.py
index 130d23b3..f37057c9 100644
--- a/pysollib/pysolgtk/tkstats.py
+++ b/pysollib/pysolgtk/tkstats.py
@@ -67,7 +67,8 @@ class StatsFormatter(PysolStatsFormatter):
                            6, result[6],
                            7, result[7])
         total, played, won, lost, time, moves, perc = self.getStatSummary()
-        text = _("Total (%d out of %d games)") % (played, total)
+        text = _("Total (%(played)d out of %(total)d games)") % {
+            'played': played, 'total': total}
         iter = self.store.append(None)
         self.store.set(iter,
                        0, text,
diff --git a/pysollib/stack.py b/pysollib/stack.py
index 396f6234..e34e7ca4 100644
--- a/pysollib/stack.py
+++ b/pysollib/stack.py
@@ -1945,7 +1945,7 @@ class TalonStack(Stack,
             nredeals = _('Unlimited redeals.')
         else:
             n = self.max_rounds-1
-            nredeals = ungettext('%d readeal', '%d redeals', n) % n
+            nredeals = ungettext('%d redeal', '%d redeals', n) % n
         # round = _('Round #%d.') % self.round
         return _('Talon.')+' '+nredeals  # +' '+round
 
diff --git a/pysollib/stats.py b/pysollib/stats.py
index 5daec02c..069a9c05 100644
--- a/pysollib/stats.py
+++ b/pysollib/stats.py
@@ -199,7 +199,7 @@ class FileStatsFormatter(PysolStatsFormatter):
     def writeStats(self, player, sort_by='name'):
         if player is None:
             player = _('Demo')
-        header = _("Statistics for ") + player
+        header = _("Statistics for %(player)s") % {'player': player}
         self.writeHeader(header, 62)
         header = self.getStatHeader()
         self.pstats(*header)
@@ -209,7 +209,8 @@ class FileStatsFormatter(PysolStatsFormatter):
             self.pstats(gameid=gameid, *result)
         self.nl()
         total, played, won, lost, time, moves, perc = self.getStatSummary()
-        self.pstats(_("Total (%d out of %d games)") % (played, total),
+        self.pstats(_("Total (%(played)d out of %(total)d games)") %
+                    {'played': played, 'total': total},
                     won+lost, won, lost, time, moves, perc)
         self.nl(2)
         return played
@@ -231,14 +232,14 @@ class FileStatsFormatter(PysolStatsFormatter):
     def writeFullLog(self, player):
         if player is None:
             player = _('Demo')
-        header = _("Full log for ") + player
+        header = _("Full log for %(player)s") % {'player': player}
         prev_games = self.app.stats.prev_games.get(player)
         return self.writeLog(player, header, prev_games)
 
     def writeSessionLog(self, player):
         if player is None:
             player = _('Demo')
-        header = _("Session log for ") + player
+        header = _("Session log for %(player)s") % {'player': player}
         prev_games = self.app.stats.session_games.get(player)
         return self.writeLog(player, header, prev_games)
 
diff --git a/pysollib/tile/menubar.py b/pysollib/tile/menubar.py
index 2bd45492..d4db3144 100644
--- a/pysollib/tile/menubar.py
+++ b/pysollib/tile/menubar.py
@@ -105,8 +105,8 @@ class PysolMenubarTk(PysolMenubarTkCommon):
         self._calc_MfxMessageDialog()(
             self.top, title=_("Change theme"),
             text=_("""\
-This settings will take effect
-the next time you restart """)+TITLE,
+These settings will take effect
+the next time you restart %(app)s""") % {'app': TITLE},
             bitmap="warning",
             default=0, strings=(_("&OK"),))
 
diff --git a/pysollib/tile/selectgame.py b/pysollib/tile/selectgame.py
index 47cebe1c..2150265b 100644
--- a/pysollib/tile/selectgame.py
+++ b/pysollib/tile/selectgame.py
@@ -144,7 +144,7 @@ class SelectGameData(SelectDialogTreeData):
             if name is None or not list(filter(
                     select_func, self.all_games_gi)):
                 continue
-            name = _("New games in v. ") + name
+            name = _("New games in v. %(version)s") % {'version': name}
             gg.append(SelectGameNode(None, name, select_func))
         if 1 and gg:
             s_by_pysol_version = SelectGameNode(None, _("by PySol version"),
@@ -513,7 +513,7 @@ class SelectGameDialogWithPreview(SelectGameDialog):
         # self.top.wm_title("Select Game - " +
         #   self.app.getGameTitleName(gameid))
         title = self.app.getGameTitleName(gameid)
-        self.top.wm_title(_("Playable Preview - ") + title)
+        self.top.wm_title(_("Playable Preview - %(game)s") % {'game': title})
         #
         self.preview_game = gi.gameclass(gi)
         self.preview_game.createPreview(self.preview_app)
diff --git a/pysollib/tile/tkstats.py b/pysollib/tile/tkstats.py
index c34357e0..ad6e5fb7 100644
--- a/pysollib/tile/tkstats.py
+++ b/pysollib/tile/tkstats.py
@@ -368,7 +368,8 @@ class TreeFormatter(PysolStatsFormatter):
             self.parent_window.games[id] = t8
 
         total, played, won, lost, time_, moves, perc = self.getStatSummary()
-        text = _("Total (%d out of %d games)") % (played, total)
+        text = _("Total (%(played)d out of %(total)d games)") % {
+            'played': played, 'total': total}
         id = self.tree.insert("", "end", text=text,
                               values=(won+lost, won, lost, time_, moves, perc))
         self.parent_window.tree_items.append(id)
diff --git a/pysollib/tile/toolbar.py b/pysollib/tile/toolbar.py
index 23921505..14125ec6 100644
--- a/pysollib/tile/toolbar.py
+++ b/pysollib/tile/toolbar.py
@@ -188,7 +188,7 @@ class PysolToolbarTk:
             (n_("Statistics"), self.mPlayerStats, _("View statistics")),
             (n_("Rules"),    self.mHelpRules, _("Rules for this game")),
             (None,           None,            None),
-            (n_("Quit"),     self.mQuit,      _("Quit ")+TITLE),
+            (n_("Quit"),     self.mQuit,      _("Quit %s") % TITLE),
                 ):
             if label is None:
                 sep = self._createSeparator()
diff --git a/pysollib/tk/selectgame.py b/pysollib/tk/selectgame.py
index de9c8b6c..08e68ea9 100644
--- a/pysollib/tk/selectgame.py
+++ b/pysollib/tk/selectgame.py
@@ -144,7 +144,7 @@ class SelectGameData(SelectDialogTreeData):
             if name is None or not list(filter(
                     select_func, self.all_games_gi)):
                 continue
-            name = _("New games in v. ") + name
+            name = _("New games in v. %(version)s") % {'version': name}
             gg.append(SelectGameNode(None, name, select_func))
         if 1 and gg:
             s_by_pysol_version = SelectGameNode(None, _("by PySol version"),
@@ -514,7 +514,7 @@ class SelectGameDialogWithPreview(SelectGameDialog):
         # self.top.wm_title("Select Game - " +
         #   self.app.getGameTitleName(gameid))
         title = self.app.getGameTitleName(gameid)
-        self.top.wm_title(_("Playable Preview - ") + title)
+        self.top.wm_title(_("Playable Preview - %(game)s") % {'game': title})
         #
         self.preview_game = gi.gameclass(gi)
         self.preview_game.createPreview(self.preview_app)
diff --git a/pysollib/tk/tkstats.py b/pysollib/tk/tkstats.py
index 709708c0..812d63e5 100644
--- a/pysollib/tk/tkstats.py
+++ b/pysollib/tk/tkstats.py
@@ -410,7 +410,8 @@ class CanvasFormatter(PysolStatsFormatter):
         #
         y += self.h
         total, played, won, lost, time_, moves, perc = self.getStatSummary()
-        s = _("Total (%d out of %d games)") % (played, total)
+        s = _("Total (%(played)d out of %(total)d games)") % {
+            'played': played, 'total': total}
         self.pstats(y, (s, won+lost, won, lost, time_, moves, perc))
 
     def writeLog(self, player, prev_games):
diff --git a/pysollib/tk/toolbar.py b/pysollib/tk/toolbar.py
index 8717998a..e030fde2 100644
--- a/pysollib/tk/toolbar.py
+++ b/pysollib/tk/toolbar.py
@@ -188,7 +188,7 @@ class PysolToolbarTk:
             (n_("Statistics"), self.mPlayerStats, _("View statistics")),
             (n_("Rules"),    self.mHelpRules, _("Rules for this game")),
             (None,           None,            None),
-            (n_("Quit"),     self.mQuit,      _("Quit ")+TITLE),
+            (n_("Quit"),     self.mQuit,      _("Quit %s") % TITLE),
                 ):
             if label is None:
                 sep = self._createSeparator()
diff --git a/pysollib/ui/tktile/menubar.py b/pysollib/ui/tktile/menubar.py
index ddd26210..b51ed692 100644
--- a/pysollib/ui/tktile/menubar.py
+++ b/pysollib/ui/tktile/menubar.py
@@ -293,7 +293,7 @@ class PysolMenubarTkCommon:
         if WIN_SYSTEM == "aqua":
             applemenu = MfxMenu(self.menubar, "apple")
             applemenu.add_command(
-                label=_("&About ")+TITLE, command=self.mHelpAbout)
+                label=_("&About %s") % TITLE, command=self.mHelpAbout)
 
         menu = MfxMenu(self.menubar, n_("&File"))
         menu.add_command(
@@ -663,7 +663,7 @@ class PysolMenubarTkCommon:
         if WIN_SYSTEM != "aqua":
             menu.add_separator()
             menu.add_command(
-                label=n_("&About ")+TITLE+"...",
+                label=_("&About %s...") % TITLE,
                 command=self.mHelpAbout)
 
         MfxMenubar.addPath = None
@@ -968,7 +968,8 @@ class PysolMenubarTkCommon:
     def updateGamesMenu(self, menu, games):
         menu.delete(0, 'last')
         if len(games) == 0:
-            menu.add_radiobutton(label='<none>', name=None, state='disabled')
+            menu.add_radiobutton(label=_('<none>'), name=None,
+                                 state='disabled')
         elif len(games) > self.cb_max*4:
             games.sort(key=lambda x: x.name)
             self._addSelectAllGameSubMenu(games, menu,
@@ -1132,7 +1133,8 @@ class PysolMenubarTkCommon:
     #
 
     DEFAULTEXTENSION = ".pso"
-    FILETYPES = ((TITLE+" files", "*"+DEFAULTEXTENSION), ("All files", "*"))
+    FILETYPES = ((_("%s files") % TITLE, "*" + DEFAULTEXTENSION),
+                 (_("All files"), "*"))
 
     def mAddFavor(self, *event):
         gameid = self.app.game.id
diff --git a/pysollib/ui/tktile/solverdialog.py b/pysollib/ui/tktile/solverdialog.py
index 0a7c6a67..7d335665 100644
--- a/pysollib/ui/tktile/solverdialog.py
+++ b/pysollib/ui/tktile/solverdialog.py
@@ -25,7 +25,7 @@ class BaseSolverDialog:
     def __init__(self, parent, app, **kw):
         self.parent = parent
         self.app = app
-        title = TITLE+' - FreeCell Solver'
+        title = _('%(app)s - FreeCell Solver') % {'app': TITLE}
         kw = self.initKw(kw)
         self._calc_MfxDialog().__init__(
             self, parent, title, kw.resizable, kw.default)
diff --git a/pysollib/ui/tktile/tkhtml.py b/pysollib/ui/tktile/tkhtml.py
index 8c030969..b15b9597 100644
--- a/pysollib/ui/tktile/tkhtml.py
+++ b/pysollib/ui/tktile/tkhtml.py
@@ -311,13 +311,13 @@ class Base_HTMLViewer:
         for p in REMOTE_PROTOCOLS:
             if url.startswith(p):
                 if not openURL(url):
-                    self.errorDialog(TITLE + _('''HTML limitation:
-The %s protocol is not supported yet.
+                    self.errorDialog(_('''%(app)s HTML limitation:
+The %(protocol)s protocol is not supported yet.
 
 Please use your standard web browser
 to open the following URL:
-%s
-''') % (p, url))
+%(url)s
+''') % {'app': TITLE, 'protocol': p, 'url': url})
                 return
 
         # locate the file relative to the current url
@@ -429,7 +429,7 @@ to open the following URL:
 
     def errorDialog(self, msg):
         self._calc_MfxMessageDialog()(
-            self.parent, title=TITLE+" HTML Problem",
+            self.parent, title="%(app)s HTML Problem" % {'app': TITLE},
             text=msg,
             # bitmap="warning", # FIXME: this interp don't have images
             strings=(_("&OK"),), default=0)