diff --git a/Translations/de/options.xml b/Translations/de/options.xml
index b5e18faf3..bdfb9a728 100644
--- a/Translations/de/options.xml
+++ b/Translations/de/options.xml
@@ -34,15 +34,11 @@
 	<fg-scenery-desc n="1">Voreinstellung ist $FG_ROOT/Scenery</fg-scenery-desc>   <!-- English: "Defaults to $FG_ROOT/Scenery" -->
 	<fg-aircraft-desc>Konfiguriert Verzeichnisse mit zusätzlichen Flugzeugen</fg-aircraft-desc>   <!-- English: "Specify additional aircraft directory path(s)" -->
 	<language-desc>Auswahl der Sprache</language-desc>   <!-- English: "Select the language for this session" -->
-<!-- 	<disable-game-mode-desc>???</disable-game-mode-desc> -->   <!-- English: "Disable full-screen game mode" -->
-<!-- 	<enable-game-mode-desc>???</enable-game-mode-desc> -->   <!-- English: "Enable full-screen game mode" -->
 <!-- 	<disable-splash-screen-desc>???</disable-splash-screen-desc> -->   <!-- English: "Disable splash screen" -->
 <!-- 	<enable-splash-screen-desc>???</enable-splash-screen-desc> -->   <!-- English: "Enable splash screen" -->
 <!-- 	<restore-defaults-desc>???</restore-defaults-desc> -->   <!-- English: "Reset all user settings to their defaults (rendering options etc)" -->
 <!-- 	<disable-save-on-exit>???</disable-save-on-exit> -->   <!-- English: "Don't save preferences upon program exit" -->
 <!-- 	<enable-save-on-exit>???</enable-save-on-exit> -->   <!-- English: "Allow saving preferences at program exit" -->
-<!-- 	<disable-intro-music-desc>???</disable-intro-music-desc> -->   <!-- English: "Disable introduction music" -->
-<!-- 	<enable-intro-music-desc>???</enable-intro-music-desc> -->   <!-- English: "Enable introduction music" -->
 <!-- 	<disable-mouse-pointer-desc>???</disable-mouse-pointer-desc> -->   <!-- English: "Disable extra mouse pointer" -->
 <!-- 	<enable-mouse-pointer-desc n="0">???</enable-mouse-pointer-desc> -->   <!-- English: "Enable extra mouse pointer" -->
 <!-- 	<enable-mouse-pointer-desc n="1">???</enable-mouse-pointer-desc> -->   <!-- English: "(i.e. for full screen Voodoo based cards)" -->
@@ -60,7 +56,6 @@
 <!-- 	<enable-ai-models-desc>???</enable-ai-models-desc> -->   <!-- English: "Enable AI subsystem (required for multi-player, AI traffic and many other animations)" -->
 <!-- 	<disable-ai-traffic-desc>???</disable-ai-traffic-desc> -->   <!-- English: "Disable artificial traffic." -->
 <!-- 	<enable-ai-traffic-desc>???</enable-ai-traffic-desc> -->   <!-- English: "Enable artificial traffic." -->
-<!-- 	<disable-ai-scenarios>???</disable-ai-scenarios> -->   <!-- English: "Disable all AI scenarios." -->
 <!-- 	<ai-scenario>???</ai-scenario> -->   <!-- English: "Add and enable a new scenario. Multiple options are allowed." -->
 <!-- 	<disable-freeze-desc>???</disable-freeze-desc> -->   <!-- English: "Start in a running state" -->
 <!-- 	<enable-freeze-desc>???</enable-freeze-desc> -->   <!-- English: "Start in a frozen state" -->
@@ -180,8 +175,6 @@
 <!-- 	<enable-fullscreen-desc>???</enable-fullscreen-desc> -->   <!-- English: "Enable fullscreen mode" -->
 <!-- 	<shading-flat-desc>???</shading-flat-desc> -->   <!-- English: "Enable flat shading" -->
 <!-- 	<shading-smooth-desc>???</shading-smooth-desc> -->   <!-- English: "Enable smooth shading" -->
-<!-- 	<disable-skyblend-desc>???</disable-skyblend-desc> -->   <!-- English: "Disable sky blending" -->
-<!-- 	<enable-skyblend-desc>???</enable-skyblend-desc> -->   <!-- English: "Enable sky blending" -->
 <!-- 	<disable-textures-desc>???</disable-textures-desc> -->   <!-- English: "Disable textures" -->
 <!-- 	<enable-textures-desc>???</enable-textures-desc> -->   <!-- English: "Enable textures" -->
 <!-- 	<materials-file-desc>???</materials-file-desc> -->   <!-- English: "Specify the materials file used to render the scenery (default: materials.xml)" -->
diff --git a/Translations/en/options.xml b/Translations/en/options.xml
index 26b13cc1c..bc8a18933 100644
--- a/Translations/en/options.xml
+++ b/Translations/en/options.xml
@@ -17,15 +17,11 @@
 	<fg-scenery-desc n="1">Defaults to $FG_ROOT/Scenery</fg-scenery-desc>
 	<fg-aircraft-desc>Specify additional aircraft directory path(s)</fg-aircraft-desc>
 	<language-desc>Select the language for this session</language-desc>
-	<disable-game-mode-desc>Disable full-screen game mode</disable-game-mode-desc>
-	<enable-game-mode-desc>Enable full-screen game mode</enable-game-mode-desc>
 	<disable-splash-screen-desc>Disable splash screen</disable-splash-screen-desc>
 	<enable-splash-screen-desc>Enable splash screen</enable-splash-screen-desc>
 	<restore-defaults-desc>Reset all user settings to their defaults (rendering options etc)</restore-defaults-desc>
 	<disable-save-on-exit>Don't save preferences upon program exit</disable-save-on-exit>
 	<enable-save-on-exit>Allow saving preferences at program exit</enable-save-on-exit>
-	<disable-intro-music-desc>Disable introduction music</disable-intro-music-desc>
-	<enable-intro-music-desc>Enable introduction music</enable-intro-music-desc>
 	<disable-mouse-pointer-desc>Disable extra mouse pointer</disable-mouse-pointer-desc>
 	<enable-mouse-pointer-desc n="0">Enable extra mouse pointer</enable-mouse-pointer-desc>
 	<enable-mouse-pointer-desc n="1">(i.e. for full screen Voodoo based cards)</enable-mouse-pointer-desc>
@@ -43,7 +39,6 @@
 	<enable-ai-models-desc>Enable AI subsystem (required for multi-player, AI traffic and many other animations)</enable-ai-models-desc>
 	<disable-ai-traffic-desc>Disable artificial traffic.</disable-ai-traffic-desc>
 	<enable-ai-traffic-desc>Enable artificial traffic.</enable-ai-traffic-desc>
-	<disable-ai-scenarios>Disable all AI scenarios.</disable-ai-scenarios>
 	<ai-scenario>Add and enable a new scenario. Multiple options are allowed.</ai-scenario>
 	<disable-freeze-desc>Start in a running state</disable-freeze-desc>
 	<enable-freeze-desc>Start in a frozen state</enable-freeze-desc>
@@ -163,8 +158,6 @@
 	<enable-fullscreen-desc>Enable fullscreen mode</enable-fullscreen-desc>
 	<shading-flat-desc>Enable flat shading</shading-flat-desc>
 	<shading-smooth-desc>Enable smooth shading</shading-smooth-desc>
-	<disable-skyblend-desc>Disable sky blending</disable-skyblend-desc>
-	<enable-skyblend-desc>Enable sky blending</enable-skyblend-desc>
 	<disable-textures-desc>Disable textures</disable-textures-desc>
 	<enable-textures-desc>Enable textures</enable-textures-desc>
 	<materials-file-desc>Specify the materials file used to render the scenery (default: Materials/regions/materials.xml)</materials-file-desc>
diff --git a/Translations/es/options.xml b/Translations/es/options.xml
index 67746e92a..a329b39db 100644
--- a/Translations/es/options.xml
+++ b/Translations/es/options.xml
@@ -34,15 +34,11 @@
 	<fg-scenery-desc n="1">Por defecto falla a $FG_ROOT/Scenery</fg-scenery-desc>   <!-- English: "Defaults to $FG_ROOT/Scenery" -->
 	<fg-aircraft-desc>Especifica la ruta a directorios de aeronaves adicionales</fg-aircraft-desc>   <!-- English: "Specify additional aircraft directory path(s)" -->
 	<language-desc>Selecciona el idioma para esta sesión</language-desc>   <!-- English: "Select the language for this session" -->
-	<disable-game-mode-desc>Desactiva el modo de pantalla completa</disable-game-mode-desc>   <!-- English: "Disable full-screen game mode" -->
-	<enable-game-mode-desc>Activa el modo de pantalla completa</enable-game-mode-desc>   <!-- English: "Enable full-screen game mode" -->
 	<disable-splash-screen-desc>Desactiva splash screen</disable-splash-screen-desc>   <!-- English: "Disable splash screen" -->
 	<enable-splash-screen-desc>Activa splash screen</enable-splash-screen-desc>   <!-- English: "Enable splash screen" -->
 	<restore-defaults-desc>Restaurar todas las configuraciones a las iniciales (opciones de renderizado, etc)</restore-defaults-desc>   <!-- English: "Reset all user settings to their defaults (rendering options etc)" -->
 	<disable-save-on-exit>No guardar las preferencias al salir del programa</disable-save-on-exit>   <!-- English: "Don't save preferences upon program exit" -->
 	<enable-save-on-exit>Permitir guardar las preferencias al salir del programa</enable-save-on-exit>   <!-- English: "Allow saving preferences at program exit" -->
-	<disable-intro-music-desc>Desactiva la introducción musical</disable-intro-music-desc>   <!-- English: "Disable introduction music" -->
-	<enable-intro-music-desc>Activa la introducción musical</enable-intro-music-desc>   <!-- English: "Enable introduction music" -->
 	<disable-mouse-pointer-desc>Desactiva el puntero extra del ratón</disable-mouse-pointer-desc>   <!-- English: "Disable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="0">Activa el puntero extra del ratón</enable-mouse-pointer-desc>   <!-- English: "Enable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="1">(p.ej. para tarjetas tipo Voodoo a pantalla completa)</enable-mouse-pointer-desc>   <!-- English: "(i.e. for full screen Voodoo based cards)" -->
@@ -60,7 +56,6 @@
 	<enable-ai-models-desc>Activa el tráfico artificial.</enable-ai-models-desc>   <!-- English: "Enable AI subsystem (required for multi-player, AI traffic and many other animations)" -->
 	<disable-ai-traffic-desc>Desactiva el tráfico artificial.</disable-ai-traffic-desc>   <!-- English: "Disable artificial traffic." -->
 	<enable-ai-traffic-desc>Activa el tráfico artificial.</enable-ai-traffic-desc>   <!-- English: "Enable artificial traffic." -->
-	<disable-ai-scenarios>Desactiva todos los escenarios AI</disable-ai-scenarios>   <!-- English: "Disable all AI scenarios." -->
 	<ai-scenario>Añade y activa un nuevo escenario. Se permite múltiples opciones.</ai-scenario>   <!-- English: "Add and enable a new scenario. Multiple options are allowed." -->
 	<disable-freeze-desc>Comenzar en un estado arrancado</disable-freeze-desc>   <!-- English: "Start in a running state" -->
 	<enable-freeze-desc>Comenzar en un estado congelado</enable-freeze-desc>   <!-- English: "Start in a frozen state" -->
@@ -180,8 +175,6 @@
 	<enable-fullscreen-desc>Activa el modo de pantalla completa</enable-fullscreen-desc>   <!-- English: "Enable fullscreen mode" -->
 	<shading-flat-desc>Activa el sombreado plano</shading-flat-desc>   <!-- English: "Enable flat shading" -->
 	<shading-smooth-desc>Activa el sombreado suavizado</shading-smooth-desc>   <!-- English: "Enable smooth shading" -->
-	<disable-skyblend-desc>Desactiva el gradiente en el cielo</disable-skyblend-desc>   <!-- English: "Disable sky blending" -->
-	<enable-skyblend-desc>Activa el gradiente en el cielo</enable-skyblend-desc>   <!-- English: "Enable sky blending" -->
 	<disable-textures-desc>Desactiva las texturas</disable-textures-desc>   <!-- English: "Disable textures" -->
 	<enable-textures-desc>Activa las texturas</enable-textures-desc>   <!-- English: "Enable textures" -->
 	<materials-file-desc>Especifica el archivo de materiales usado para renderizar el escenario (por defecto: Materials/regions/materials.xml)</materials-file-desc>   <!-- English: "Specify the materials file used to render the scenery (default: Materials/regions/materials.xml)" -->
diff --git a/Translations/fr/options.xml b/Translations/fr/options.xml
index 303d16f57..8bdda81e7 100644
--- a/Translations/fr/options.xml
+++ b/Translations/fr/options.xml
@@ -34,15 +34,11 @@
     <fg-scenery-desc n="1">Positionné par défaut à $FG_ROOT/Scenery.</fg-scenery-desc>   <!-- English: "Defaults to $FG_ROOT/Scenery" -->
     <fg-aircraft-desc>Spéficie les emplacements des répertoires des aéronefs additionnels.</fg-aircraft-desc>   <!-- English: "Specify additional aircraft directory path(s)" -->
     <language-desc>Choisit la langue pour cette session.</language-desc>   <!-- English: "Select the language for this session" -->
-    <disable-game-mode-desc>Désactive le mode de jeu plein écran.</disable-game-mode-desc>   <!-- English: "Disable full-screen game mode" -->
-    <enable-game-mode-desc>Active le mode de jeu plein écran.</enable-game-mode-desc>   <!-- English: "Enable full-screen game mode" -->
     <disable-splash-screen-desc>Désactive l'écran d'accueil.</disable-splash-screen-desc>   <!-- English: "Disable splash screen" -->
     <enable-splash-screen-desc>Active l'écran d'accueil.</enable-splash-screen-desc>   <!-- English: "Enable splash screen" -->
     <restore-defaults-desc>Restaurer tous les paramètres utilisateurs à leurs valeurs par défaut (options de rendu, etc).</restore-defaults-desc>   <!-- English: "Reset all user settings to their defaults (rendering options etc)" -->
     <disable-save-on-exit>Ne sauvegarde pas les préférences lors de la sortie du programme.</disable-save-on-exit>   <!-- English: "Don't save preferences upon program exit" -->
     <enable-save-on-exit>Autorise la sauvegarde des préférences à la sortie du programme.</enable-save-on-exit>   <!-- English: "Allow saving preferences at program exit" -->
-    <disable-intro-music-desc>Désactive la musique d'introduction.</disable-intro-music-desc>   <!-- English: "Disable introduction music" -->
-    <enable-intro-music-desc>Active la musique d'introduction.</enable-intro-music-desc>   <!-- English: "Enable introduction music" -->
     <disable-mouse-pointer-desc>Désactive le pointeur de la souris supplémentaire.</disable-mouse-pointer-desc>   <!-- English: "Disable extra mouse pointer" -->
     <enable-mouse-pointer-desc n="0">Active le pointeur de la souris supplémentaire.</enable-mouse-pointer-desc>   <!-- English: "Enable extra mouse pointer" -->
     <enable-mouse-pointer-desc n="1">(c'est-à-dire pour l'affichage plein écran avec des cartes à base de Voodoo)</enable-mouse-pointer-desc>   <!-- English: "(i.e. for full screen Voodoo based cards)" -->
@@ -60,7 +56,6 @@
     <enable-ai-models-desc>Active le sous-système IA (nécessaire pour le multi-joueurs, le trafic AI et de nombreuses autres animations).</enable-ai-models-desc>   <!-- English: "Enable AI subsystem (required for multi-player, AI traffic and many other animations)" -->
     <disable-ai-traffic-desc>Désactive le trafic artificiel.</disable-ai-traffic-desc>   <!-- English: "Disable artificial traffic." -->
     <enable-ai-traffic-desc>Active le trafic artificiel.</enable-ai-traffic-desc>   <!-- English: "Enable artificial traffic." -->
-    <disable-ai-scenarios>Désactive tous les scénarios IA.</disable-ai-scenarios>   <!-- English: "Disable all AI scenarios." -->
     <ai-scenario>Ajoute et active un nouveau scénario. Les options multiples sont autorisées.</ai-scenario>   <!-- English: "Add and enable a new scenario. Multiple options are allowed." -->
     <disable-freeze-desc>Démarre dans un état fonctionnel.</disable-freeze-desc>   <!-- English: "Start in a running state" -->
     <enable-freeze-desc>Démarre dans un état gelé.</enable-freeze-desc>   <!-- English: "Start in a frozen state" -->
@@ -180,8 +175,6 @@
     <enable-fullscreen-desc>Active le mode plein écran.</enable-fullscreen-desc>   <!-- English: "Enable fullscreen mode" -->
     <shading-flat-desc>Active l'ombrage à plat.</shading-flat-desc>   <!-- English: "Enable flat shading" -->
     <shading-smooth-desc>Active l'ombrage doux.</shading-smooth-desc>   <!-- English: "Enable smooth shading" -->
-    <disable-skyblend-desc>Désactive le dégradé du ciel.</disable-skyblend-desc>   <!-- English: "Disable sky blending" -->
-    <enable-skyblend-desc>Active le dégradé du ciel.</enable-skyblend-desc>   <!-- English: "Enable sky blending" -->
     <disable-textures-desc>Désactive les textures.</disable-textures-desc>   <!-- English: "Disable textures" -->
     <enable-textures-desc>Active les textures.</enable-textures-desc>   <!-- English: "Enable textures" -->
     <materials-file-desc>Précise le fichier de matériaux utilisé pour le rendu des scènes (par défaut : materials.xml).</materials-file-desc>   <!-- English: "Specify the materials file used to render the scenery (default: materials.xml)" -->
diff --git a/Translations/it/options.xml b/Translations/it/options.xml
index 47db52bd2..46d1939e4 100644
--- a/Translations/it/options.xml
+++ b/Translations/it/options.xml
@@ -34,15 +34,11 @@
 	<fg-scenery-desc n="1">Default a $FG_ROOT/Scenario</fg-scenery-desc>   <!-- English: "Defaults to $FG_ROOT/Scenery" -->
 	<fg-aircraft-desc>Specifica percorso del catalogo per addizionali aerei </fg-aircraft-desc>   <!-- English: "Specify additional aircraft directory path(s)" -->
 	<language-desc>Seleziona la lingua per questa sessione</language-desc>   <!-- English: "Select the language for this session" -->
-	<disable-game-mode-desc>disabilita modalita' di gioco a schermo pieno -desc</disable-game-mode-desc>   <!-- English: "Disable full-screen game mode" -->
-	<enable-game-mode-desc>abilita modalita'di gioco a schermo pieno </enable-game-mode-desc>   <!-- English: "Enable full-screen game mode" -->
 	<disable-splash-screen-desc>Disabilita schermo splash</disable-splash-screen-desc>   <!-- English: "Disable splash screen" -->
 	<enable-splash-screen-desc>Abilita schermo splash</enable-splash-screen-desc>   <!-- English: "Enable splash screen" -->
 <!-- 	<restore-defaults-desc>???</restore-defaults-desc> -->   <!-- English: "Reset all user settings to their defaults (rendering options etc)" -->
 	<disable-save-on-exit>Non salvare le impostazioni all'uscita del programma</disable-save-on-exit>   <!-- English: "Don't save preferences upon program exit" -->
 	<enable-save-on-exit>Salva le impostazioni all'uscita del programma</enable-save-on-exit>   <!-- English: "Allow saving preferences at program exit" -->
-	<disable-intro-music-desc>Disabilita musica introduttiva</disable-intro-music-desc>   <!-- English: "Disable introduction music" -->
-	<enable-intro-music-desc>Abilita musica introduttiva</enable-intro-music-desc>   <!-- English: "Enable introduction music" -->
 	<disable-mouse-pointer-desc>Disabilita extra puntatore di mouse</disable-mouse-pointer-desc>   <!-- English: "Disable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="0">Abilita extra puntatore di mouse</enable-mouse-pointer-desc>   <!-- English: "Enable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="1">(i.e per schermo pieno basato su carte Vodoo)</enable-mouse-pointer-desc>   <!-- English: "(i.e. for full screen Voodoo based cards)" -->
@@ -60,7 +56,6 @@
 	<enable-ai-models-desc>Abilita sotto-sistema AI (richiesto per gioco multigiocatore, traffico AI e molte altre animazioni)</enable-ai-models-desc>   <!-- English: "Enable AI subsystem (required for multi-player, AI traffic and many other animations)" -->
 	<disable-ai-traffic-desc>Disabilita traffico artificiale</disable-ai-traffic-desc>   <!-- English: "Disable artificial traffic." -->
 	<enable-ai-traffic-desc>Abilita traffico artificiale</enable-ai-traffic-desc>   <!-- English: "Enable artificial traffic." -->
-	<disable-ai-scenarios>Disabilita tutti i scenari AI</disable-ai-scenarios>   <!-- English: "Disable all AI scenarios." -->
 	<ai-scenario>Aggiungi e abilita un nuo scenario. Multiple opzioni sono permesse.</ai-scenario>   <!-- English: "Add and enable a new scenario. Multiple options are allowed." -->
 	<disable-freeze-desc>Inizia in modalita' attiva</disable-freeze-desc>   <!-- English: "Start in a running state" -->
 	<enable-freeze-desc>Inizia in modalita' congelata</enable-freeze-desc>   <!-- English: "Start in a frozen state" -->
@@ -180,8 +175,6 @@
 	<enable-fullscreen-desc>Abilita modalita' a schermo pieno </enable-fullscreen-desc>   <!-- English: "Enable fullscreen mode" -->
 	<shading-flat-desc>Abilita piatta ombreggiattura</shading-flat-desc>   <!-- English: "Enable flat shading" -->
 	<shading-smooth-desc>Abilita liscia ombreggiatura</shading-smooth-desc>   <!-- English: "Enable smooth shading" -->
-	<disable-skyblend-desc>Disabilita mescolamento del cielo</disable-skyblend-desc>   <!-- English: "Disable sky blending" -->
-	<enable-skyblend-desc>Abilita mescolamento del cielo </enable-skyblend-desc>   <!-- English: "Enable sky blending" -->
 	<disable-textures-desc>Disabilita texture</disable-textures-desc>   <!-- English: "Disable textures" -->
 	<enable-textures-desc>Abilita texture</enable-textures-desc>   <!-- English: "Enable textures" -->
 	<materials-file-desc>Specifica i file materiali usati per creare lo scenario (default:materiali.xml)</materials-file-desc>   <!-- English: "Specify the materials file used to render the scenery (default: materials.xml)" -->
diff --git a/Translations/pl/options-win.xml b/Translations/pl/options-win.xml
index dc5116537..88b6a77c1 100644
--- a/Translations/pl/options-win.xml
+++ b/Translations/pl/options-win.xml
@@ -41,14 +41,10 @@
 	<fg-scenery-desc n="1">Domyœlna œcie¿ka $FG_ROOT/Scenery</fg-scenery-desc>   <!-- English: "Defaults to $FG_ROOT/Scenery" -->
 <!-- 	<fg-aircraft-desc>???</fg-aircraft-desc> -->   <!-- English: "Specify additional aircraft directory path(s)" -->
 	<language-desc>Wybierz jêzyk dla tej sesji</language-desc>   <!-- English: "Select the language for this session" -->
-	<disable-game-mode-desc>Wy³¹czony tryb pe³noekranowy</disable-game-mode-desc>   <!-- English: "Disable full-screen game mode" -->
-	<enable-game-mode-desc>Zezwól na tryb pe³noekranowy</enable-game-mode-desc>   <!-- English: "Enable full-screen game mode" -->
 	<disable-splash-screen-desc>Brak ekranu powitalnego</disable-splash-screen-desc>   <!-- English: "Disable splash screen" -->
 	<enable-splash-screen-desc>W³¹cz ekran powitalny</enable-splash-screen-desc>   <!-- English: "Enable splash screen" -->
 <!-- 	<disable-save-on-exit>???</disable-save-on-exit> -->   <!-- English: "Don't save preferences upon program exit" -->
 <!-- 	<enable-save-on-exit>???</enable-save-on-exit> -->   <!-- English: "Allow saving preferences at program exit" -->
-	<disable-intro-music-desc>Brak intro muzycznego</disable-intro-music-desc>   <!-- English: "Disable introduction music" -->
-	<enable-intro-music-desc>W³¹cz intro muzyczne</enable-intro-music-desc>   <!-- English: "Enable introduction music" -->
 	<disable-mouse-pointer-desc>Niedostêpny dodatkowy wskaŸnik myszy</disable-mouse-pointer-desc>   <!-- English: "Disable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="0">Dostêpny dodatkowy wskaŸnik myszy</enable-mouse-pointer-desc>   <!-- English: "Enable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="1">(np. dla trybu pe³noekranowego dla kart bazuj¹cych na Voodoo)</enable-mouse-pointer-desc>   <!-- English: "(i.e. for full screen Voodoo based cards)" -->
@@ -62,7 +58,6 @@
 <!-- 	<enable-ai-models-desc>???</enable-ai-models-desc> -->   <!-- English: "Enable AI subsystem (required for multi-player, AI traffic and many other animations)" -->
 <!-- 	<disable-ai-traffic-desc>???</disable-ai-traffic-desc> -->   <!-- English: "Disable artificial traffic." -->
 <!-- 	<enable-ai-traffic-desc>???</enable-ai-traffic-desc> -->   <!-- English: "Enable artificial traffic." -->
-<!-- 	<disable-ai-scenarios>???</disable-ai-scenarios> -->   <!-- English: "Disable all AI scenarios." -->
 <!-- 	<ai-scenario>???</ai-scenario> -->   <!-- English: "Add and enable a new scenario. Multiple options are allowed." -->
 	<disable-freeze-desc>Start w stanie uruchomionym</disable-freeze-desc>   <!-- English: "Start in a running state" -->
 	<enable-freeze-desc>Uruchom w trybie wstrzynanym</enable-freeze-desc>   <!-- English: "Start in a frozen state" -->
@@ -182,8 +177,6 @@
 	<enable-fullscreen-desc>Dostêpny tryb pe³noekranowy</enable-fullscreen-desc>   <!-- English: "Enable fullscreen mode" -->
 	<shading-flat-desc>Zezwól na p³askie cieniowanie</shading-flat-desc>   <!-- English: "Enable flat shading" -->
 	<shading-smooth-desc>Zezwól na g³adkie cieniowanie</shading-smooth-desc>   <!-- English: "Enable smooth shading" -->
-	<disable-skyblend-desc>Niedostêpna przeŸroczystoœæ nieba</disable-skyblend-desc>   <!-- English: "Disable sky blending" -->
-	<enable-skyblend-desc>Dostêpna przezroczystoœæ nieba</enable-skyblend-desc>   <!-- English: "Enable sky blending" -->
 	<disable-textures-desc>Tekstury niedostêpne</disable-textures-desc>   <!-- English: "Disable textures" -->
 	<enable-textures-desc>Tekstury dostêpne</enable-textures-desc>   <!-- English: "Enable textures" -->
 <!-- 	<materials-file-desc>???</materials-file-desc> -->   <!-- English: "Specify the materials file used to render the scenery (default: materials.xml)" -->
diff --git a/Translations/pl/options.xml b/Translations/pl/options.xml
index bc61a8973..5dcb2af67 100644
--- a/Translations/pl/options.xml
+++ b/Translations/pl/options.xml
@@ -45,15 +45,11 @@
 	<fg-scenery-desc n="1">Domyslna sciezka $FG_ROOT/Scenery</fg-scenery-desc>   <!-- English: "Defaults to $FG_ROOT/Scenery" -->
 <!-- 	<fg-aircraft-desc>???</fg-aircraft-desc> -->   <!-- English: "Specify additional aircraft directory path(s)" -->
 	<language-desc>Wybierz jezyk dla tej sesji</language-desc>   <!-- English: "Select the language for this session" -->
-	<disable-game-mode-desc>Wylaczony tryb pelnoekranowy</disable-game-mode-desc>   <!-- English: "Disable full-screen game mode" -->
-	<enable-game-mode-desc>Zezwol na tryb pelnoekranowy</enable-game-mode-desc>   <!-- English: "Enable full-screen game mode" -->
 	<disable-splash-screen-desc>Brak ekranu powitalnego</disable-splash-screen-desc>   <!-- English: "Disable splash screen" -->
 	<enable-splash-screen-desc>Wlacz ekran powitalny</enable-splash-screen-desc>   <!-- English: "Enable splash screen" -->
 <!-- 	<restore-defaults-desc>???</restore-defaults-desc> -->   <!-- English: "Reset all user settings to their defaults (rendering options etc)" -->
 <!-- 	<disable-save-on-exit>???</disable-save-on-exit> -->   <!-- English: "Don't save preferences upon program exit" -->
 <!-- 	<enable-save-on-exit>???</enable-save-on-exit> -->   <!-- English: "Allow saving preferences at program exit" -->
-	<disable-intro-music-desc>Brak intro muzycznego</disable-intro-music-desc>   <!-- English: "Disable introduction music" -->
-	<enable-intro-music-desc>Wlacz intro muzyczne</enable-intro-music-desc>   <!-- English: "Enable introduction music" -->
 	<disable-mouse-pointer-desc>Niedostepny dodatkowy wskaznik myszy</disable-mouse-pointer-desc>   <!-- English: "Disable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="0">Dostepny dodatkowy wskaznik myszy</enable-mouse-pointer-desc>   <!-- English: "Enable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="1">(np. dla trybu pelnoekranowego dla kart bazujacych na Voodoo)</enable-mouse-pointer-desc>   <!-- English: "(i.e. for full screen Voodoo based cards)" -->
@@ -71,7 +67,6 @@
 <!-- 	<enable-ai-models-desc>???</enable-ai-models-desc> -->   <!-- English: "Enable AI subsystem (required for multi-player, AI traffic and many other animations)" -->
 <!-- 	<disable-ai-traffic-desc>???</disable-ai-traffic-desc> -->   <!-- English: "Disable artificial traffic." -->
 <!-- 	<enable-ai-traffic-desc>???</enable-ai-traffic-desc> -->   <!-- English: "Enable artificial traffic." -->
-<!-- 	<disable-ai-scenarios>???</disable-ai-scenarios> -->   <!-- English: "Disable all AI scenarios." -->
 <!-- 	<ai-scenario>???</ai-scenario> -->   <!-- English: "Add and enable a new scenario. Multiple options are allowed." -->
 	<disable-freeze-desc>Start w stanie uruchomionym</disable-freeze-desc>   <!-- English: "Start in a running state" -->
 	<enable-freeze-desc>Uruchom w trybie wstrzynanym</enable-freeze-desc>   <!-- English: "Start in a frozen state" -->
@@ -191,8 +186,6 @@
 	<enable-fullscreen-desc>Dostepny tryb pelnoekranowy</enable-fullscreen-desc>   <!-- English: "Enable fullscreen mode" -->
 	<shading-flat-desc>Zezwol na plaskie cieniowanie</shading-flat-desc>   <!-- English: "Enable flat shading" -->
 	<shading-smooth-desc>Zezwol na gladkie cieniowanie</shading-smooth-desc>   <!-- English: "Enable smooth shading" -->
-	<disable-skyblend-desc>Niedostepna przezroczystosc nieba</disable-skyblend-desc>   <!-- English: "Disable sky blending" -->
-	<enable-skyblend-desc>Dostepna przezroczystosc nieba</enable-skyblend-desc>   <!-- English: "Enable sky blending" -->
 	<disable-textures-desc>Teksturowanie wylaczone</disable-textures-desc>   <!-- English: "Disable textures" -->
 	<enable-textures-desc>Teksturowanie wlaczone</enable-textures-desc>   <!-- English: "Enable textures" -->
 <!-- 	<materials-file-desc>???</materials-file-desc> -->   <!-- English: "Specify the materials file used to render the scenery (default: materials.xml)" -->
diff --git a/Translations/pt/options.xml b/Translations/pt/options.xml
index 7c077e472..8f81be150 100644
--- a/Translations/pt/options.xml
+++ b/Translations/pt/options.xml
@@ -34,15 +34,11 @@
 	<fg-scenery-desc n="1">Por padrao e $FG_ROOT/Scenery</fg-scenery-desc>   <!-- English: "Defaults to $FG_ROOT/Scenery" -->
 	<fg-aircraft-desc>Especifica o caminho do diretorio de aeronaves adicionais</fg-aircraft-desc>   <!-- English: "Specify additional aircraft directory path(s)" -->
 	<language-desc>Seleciona o idioma para esta sessao</language-desc>   <!-- English: "Select the language for this session" -->
-	<disable-game-mode-desc>Desativa o modo tela cheia</disable-game-mode-desc>   <!-- English: "Disable full-screen game mode" -->
-	<enable-game-mode-desc>Ativa o modo tela cheia</enable-game-mode-desc>   <!-- English: "Enable full-screen game mode" -->
 	<disable-splash-screen-desc>Desativa tela de abertura</disable-splash-screen-desc>   <!-- English: "Disable splash screen" -->
 	<enable-splash-screen-desc>Ativa tela de abertura</enable-splash-screen-desc>   <!-- English: "Enable splash screen" -->
 	<restore-defaults-desc>Restaurar todas as configuracoes do usuario para seus padroes (opcoes de renderizacao etc)</restore-defaults-desc>   <!-- English: "Reset all user settings to their defaults (rendering options etc)" -->
 	<disable-save-on-exit>Nao salvar preferencias ao sair do programa</disable-save-on-exit>   <!-- English: "Don't save preferences upon program exit" -->
 	<enable-save-on-exit>Permitir salvar preferencias ao sair do programa</enable-save-on-exit>   <!-- English: "Allow saving preferences at program exit" -->
-	<disable-intro-music-desc>Desativar musica de introducao</disable-intro-music-desc>   <!-- English: "Disable introduction music" -->
-	<enable-intro-music-desc>Ativar musica de introducaoo</enable-intro-music-desc>   <!-- English: "Enable introduction music" -->
 	<disable-mouse-pointer-desc>Desativar ponteiro adicional do mouse</disable-mouse-pointer-desc>   <!-- English: "Disable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="0">Ativar ponteiro adicional do mouse</enable-mouse-pointer-desc>   <!-- English: "Enable extra mouse pointer" -->
 	<enable-mouse-pointer-desc n="1">(i.e. para placas do tipo Voodoo tela cheia)</enable-mouse-pointer-desc>   <!-- English: "(i.e. for full screen Voodoo based cards)" -->
@@ -60,7 +56,6 @@
 	<enable-ai-models-desc>Ativar trafego interativo (necessario para multi-jogador, trafego IA e muitas outras animacoes)</enable-ai-models-desc>   <!-- English: "Enable AI subsystem (required for multi-player, AI traffic and many other animations)" -->
 	<disable-ai-traffic-desc>Desativar trafego artificial.</disable-ai-traffic-desc>   <!-- English: "Disable artificial traffic." -->
 	<enable-ai-traffic-desc>Ativar trafego artificial.</enable-ai-traffic-desc>   <!-- English: "Enable artificial traffic." -->
-	<disable-ai-scenarios>Desativa todos os cenarios interativos.</disable-ai-scenarios>   <!-- English: "Disable all AI scenarios." -->
 	<ai-scenario>Adiciona e habilita um novo cenario. Multiplas opcoes sao permitidas.</ai-scenario>   <!-- English: "Add and enable a new scenario. Multiple options are allowed." -->
 	<disable-freeze-desc>Comece em um estado de funcionamento</disable-freeze-desc>   <!-- English: "Start in a running state" -->
 	<enable-freeze-desc>Comece em um estado congelado</enable-freeze-desc>   <!-- English: "Start in a frozen state" -->
@@ -180,8 +175,6 @@
 	<enable-fullscreen-desc>Ativa o modo tela cheia</enable-fullscreen-desc>   <!-- English: "Enable fullscreen mode" -->
 	<shading-flat-desc>Ativa o sombreamento plano</shading-flat-desc>   <!-- English: "Enable flat shading" -->
 	<shading-smooth-desc>Ativa o sombreamento suavizado</shading-smooth-desc>   <!-- English: "Enable smooth shading" -->
-	<disable-skyblend-desc>Desativa o gradiente do ceu</disable-skyblend-desc>   <!-- English: "Disable sky blending" -->
-	<enable-skyblend-desc>Ativa o gradiente do ceu</enable-skyblend-desc>   <!-- English: "Enable sky blending" -->
 	<disable-textures-desc>Desativa as texturas</disable-textures-desc>   <!-- English: "Disable textures" -->
 	<enable-textures-desc>Ativa as texturas</enable-textures-desc>   <!-- English: "Enable textures" -->
 	<materials-file-desc>Especifica o arquivo de materiais utilizados para renderizar o cenario (por padrao: materials.xml)</materials-file-desc>   <!-- English: "Specify the materials file used to render the scenery (default: materials.xml)" -->
diff --git a/options.xml b/options.xml
index 26588d801..c293c113a 100644
--- a/options.xml
+++ b/options.xml
@@ -107,16 +107,6 @@
     <description>enable-save-on-exit</description>
    </option>
 
-   <option>
-    <name>disable-intro-music</name>
-    <description>disable-intro-music-desc</description>
-   </option>
-
-   <option>
-    <name>enable-intro-music</name>
-    <description>enable-intro-music-desc</description>
-   </option>
-
    <option>
     <name>control</name>
     <arg>mode</arg>
@@ -262,11 +252,6 @@
     <description>enable-ai-traffic-desc</description>
    </option>
 
-   <option>
-    <name>disable-ai-scenarios</name>
-    <description>disable-ai-scenarios</description>
-   </option>
-
    <option>
     <name>ai-scenario</name>
     <arg>scenario</arg>
@@ -448,16 +433,6 @@
     <description>enable-fullscreen-desc</description>
    </option>
 
-   <option>
-    <name>disable-game-mode</name>
-    <description>disable-game-mode-desc</description>
-   </option>
-
-   <option>
-    <name>enable-game-mode</name>
-    <description>enable-game-mode-desc</description>
-   </option>
-
    <option>
     <name>shading-flat</name>
     <description>shading-flat-desc</description>
@@ -468,16 +443,6 @@
     <description>shading-smooth-desc</description>
    </option>
 
-   <option>
-    <name>disable-skyblend</name>
-    <description>disable-skyblend-desc</description>
-   </option>
-
-   <option>
-    <name>enable-skyblend</name>
-    <description>enable-skyblend-desc</description>
-   </option>
-
    <option>
     <name>disable-textures</name>
     <description>disable-textures-desc</description>
diff --git a/preferences.xml b/preferences.xml
index 7b8ae64f6..da8416ccb 100644
--- a/preferences.xml
+++ b/preferences.xml
@@ -49,8 +49,6 @@ Started September 2000 by David Megginson, david@megginson.com
 			<splash-title>
 				<!-- -->
 			</splash-title>
-			<intro-music type="bool">false</intro-music>
-			<game-mode type="bool" preserve="y">false</game-mode>
 			<fullscreen type="bool" preserve="y">false</fullscreen>
 			<units>feet</units>
 			<save-on-exit type="bool" userarchive="y">true</save-on-exit>