diff --git a/DroidFish/res/raw-de/about.html b/DroidFish/res/raw-de/about.html
index 57b3b91..04e14ea 100644
--- a/DroidFish/res/raw-de/about.html
+++ b/DroidFish/res/raw-de/about.html
@@ -45,7 +45,7 @@ zurücknehmen oder wiederholen.
 Spielfeld nach oben oder unten zur vorherigen oder nächsten Variante.  
 </li>
   <li>
-    Längeres Drücken auf die Links- und Rechts-Schaltflächen aktiviert
+    Längeres Drücken auf die Links- und Rechts-Tasten aktiviert
 zusätzliche Kommandos zur Navigation.  
 </li>
   <li>
diff --git a/DroidFish/res/raw-es/about.html b/DroidFish/res/raw-es/about.html
index 21b4393..b259ed6 100644
--- a/DroidFish/res/raw-es/about.html
+++ b/DroidFish/res/raw-es/about.html
@@ -6,8 +6,7 @@
 
 <h2>Acerca de</h2>
 <p>
-  <i>DroidFish</i> incorpora una interfaz gráfica de ajedrez de usuario muy completa,
-  combinada con el muy potente motor de ajedrez <i>Stockfish</i>.
+  <i>DroidFish</i> incorpora una interfaz gráfica de ajedrez de usuario muy completa, combinada con el muy potente motor de ajedrez <i>Stockfish</i>.
 </p>
 
 <h3>Características</h3>
diff --git a/DroidFish/res/values-de/strings.xml b/DroidFish/res/values-de/strings.xml
index 6db1474..9548e5c 100644
--- a/DroidFish/res/values-de/strings.xml
+++ b/DroidFish/res/values-de/strings.xml
@@ -246,8 +246,8 @@ wenn Sie es nicht aktiv nutzen.\
   <string name="prefs_leftHanded_summary">Steuerelemente auf der linken Seite im Querformat</string>
   <string name="prefs_fontSize_title">Schriftgröße</string>
   <string name="prefs_fontSize_summary">Schriftgröße für Zugliste und Partie-Informationen einstellen</string>
-  <string name="prefs_largeButtons_title">Größe der Schaltflächen</string>
-  <string name="prefs_largeButtons_summary">Große Schaltflächen für Partie-Navigation und Spielmodus-Einstellung verwenden</string>
+  <string name="prefs_largeButtons_title">Größe der Tasten</string>
+  <string name="prefs_largeButtons_summary">Große Tasten für Partie-Navigation und Spielmodus-Einstellung verwenden</string>
   <string name="prefs_buttonSettings_title">Tasten konfigurieren</string>
   <string name="prefs_buttonSettings_summary">Tastengröße und -aktionen festlegen</string>
   <string name="prefs_button_action_0_title">Hauptaktion</string>
diff --git a/DroidFish/res/values-pt/strings.xml b/DroidFish/res/values-pt/strings.xml
new file mode 100644
index 0000000..d7fc8fa
--- /dev/null
+++ b/DroidFish/res/values-pt/strings.xml
@@ -0,0 +1,251 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--Generated by crowdin.net-->
+<resources>
+  <string name="offer_draw">Oferecer empate</string>
+  <string name="queen">Dama</string>
+  <string name="rook">Torre</string>
+  <string name="bishop">Bispo</string>
+  <string name="knight">Cavalo</string>
+  <string name="promote_pawn_to">Promover peão a?</string>
+  <string name="copy_game">Copiar partida para o clipboard</string>
+  <string name="copy_position">Copiar posição para o clipboard</string>
+  <string name="paste">Colar do clipboard</string>
+  <string name="load_game">Carregar partida de arquivo PGN</string>
+  <string name="load_scid_game">Carregar partida de arquivo Scid</string>
+  <string name="save_game">Salvar partida em arquivo PGN</string>
+  <string name="truncate_gametree">Truncar árvore da partida</string>
+  <string name="move_var_up">Mover variação para cima</string>
+  <string name="move_var_down">Mover variação para baixo</string>
+  <string name="add_null_move">Adicionar lance nulo</string>
+  <string name="tools_menu">Ferramentas</string>
+  <string name="load_save_menu">Carregar/Salvar partida</string>
+  <string name="goto_move">Ir para o lance</string>
+  <string name="edit_strength">Alterar nível</string>
+  <string name="edit_randomization">Alterar aleatoriedade</string>
+  <string name="invalid_number_format">Formato de número inválido</string>
+  <string name="side_to_move">Lado a mover</string>
+  <string name="clear_board">Limpar tabuleiro</string>
+  <string name="initial_position">Posição inicial</string>
+  <string name="castling_flags">Indicador de Roque</string>
+  <string name="en_passant_file">Coluna en passant</string>
+  <string name="move_counters">Contador de lances</string>
+  <string name="paste_position">Colar posição</string>
+  <string name="edit_board">Editar tabuleiro</string>
+  <string name="select_side_to_move_first">Escolher lado para mover primeiro</string>
+  <string name="white">Brancas</string>
+  <string name="black">Pretas</string>
+  <string name="white_king_castle">Roque das Brancas na ala do Rei</string>
+  <string name="white_queen_castle">Roque das Brancas na ala da Dama</string>
+  <string name="black_king_castle">Roque das Pretas na ala do Rei</string>
+  <string name="black_queen_castle">Roque das Pretas na ala da Dama</string>
+  <string name="none">Nenhum</string>
+  <string name="select_en_passant_file">Escolha coluna En Passant</string>
+  <string name="edit_move_counters">Alterar contador de lances</string>
+  <string name="internal_book">&lt;Livro interno&gt;</string>
+  <string name="select_opening_book_file">Escolher arquivo de livro de aberturas</string>
+  <string name="select_chess_engine">Escolher software de Xadrez</string>
+  <string name="select_pgn_file">Abrir arquivo PGN</string>
+  <string name="select_pgn_file_save">Salvar em arquivo PGN</string>
+  <string name="pgn_load">Carregar</string>
+  <string name="pgn_save">Salvar</string>
+  <string name="select_scid_file">Escolher arquivo Scid para abrir</string>
+  <string name="whites_move">Lance das Brancas</string>
+  <string name="blacks_move">Lance das Pretas</string>
+  <string name="ponder">Avaliando</string>
+  <string name="thinking">Pensando</string>
+  <string name="analyzing">Analisando</string>
+  <string name="white_mate">Partida encerrada, mate das Brancas!</string>
+  <string name="black_mate">Partida encerrada, mate das Pretas!</string>
+  <string name="stalemate">Partida encerrada, empate por afogamento!</string>
+  <string name="draw_rep">Partida encerrada, empate por repetição!</string>
+  <string name="draw_50">Partida encerrada, empate pela regra dos 50 lances!</string>
+  <string name="draw_no_mate">Partida encerrada, empate por impossibilidade de mate!</string>
+  <string name="draw_agree">Partida encerrada, empate por acordo mútuo!</string>
+  <string name="resign_white">Partida encerrada, Brancas abandonam!</string>
+  <string name="resign_black">Partida encerrada, Pretas abandonam!</string>
+  <string name="book">Livro:</string>
+  <string name="invalid_move">Lance inválido</string>
+  <string name="preferences">Preferências</string>
+  <string name="load_game_title">Editar arquivo / Carregar partida</string>
+  <string name="save_game_title">Editar arquivo / Salvar partida</string>
+  <string name="save_game_hint">Escolha uma partida existente para controlar onde salvar a partida. Pressione e mantenha uma partida existente para removê-la.</string>
+  <string name="load_scid_game_title">Carregar partida Scid</string>
+  <string name="cpu_warning_title">Aviso de CPU</string>
+  <string name="failed_to_read_pgn_data">Falha na leitura de arquivo PGN</string>
+  <string-array name="engine_threads_texts">
+    <item>Automatic</item>
+    <item>1</item>
+    <item>2</item>
+    <item>3</item>
+    <item>4</item>
+  </string-array>
+  <string-array name="engine_threads_values">
+    <item>0</item>
+    <item>1</item>
+    <item>2</item>
+    <item>3</item>
+    <item>4</item>
+  </string-array>
+  <string-array name="moves_per_session_texts">
+    <item>Whole Game</item>
+    <item>1 move</item>
+    <item>10 moves</item>
+    <item>20 moves</item>
+    <item>30 moves</item>
+    <item>40 moves</item>
+    <item>50 moves</item>
+    <item>60 moves</item>
+  </string-array>
+  <string-array name="moves_per_session_values">
+    <item>0</item>
+    <item>1</item>
+    <item>10</item>
+    <item>20</item>
+    <item>30</item>
+    <item>40</item>
+    <item>50</item>
+    <item>60</item>
+  </string-array>
+  <string-array name="time_control_texts">
+    <item>15 seconds</item>
+    <item>30 seconds</item>
+    <item>1 minute</item>
+    <item>2 minutes</item>
+    <item>3 minutes</item>
+    <item>5 minutes</item>
+    <item>10 minutes</item>
+    <item>15 minutes</item>
+    <item>30 minutes</item>
+    <item>45 minutes</item>
+    <item>60 minutes</item>
+    <item>90 minutes</item>
+    <item>120 minutes</item>
+  </string-array>
+  <string-array name="time_control_values">
+    <item>15000</item>
+    <item>30000</item>
+    <item>60000</item>
+    <item>120000</item>
+    <item>180000</item>
+    <item>300000</item>
+    <item>600000</item>
+    <item>900000</item>
+    <item>1800000</item>
+    <item>2700000</item>
+    <item>3600000</item>
+    <item>5400000</item>
+    <item>7200000</item>
+  </string-array>
+  <string-array name="time_increment_texts">
+    <item>0s</item>
+    <item>1s</item>
+    <item>2s</item>
+    <item>3s</item>
+    <item>4s</item>
+    <item>5s</item>
+    <item>10s</item>
+    <item>12s</item>
+    <item>15s</item>
+    <item>30s</item>
+    <item>60s</item>
+  </string-array>
+  <string-array name="time_increment_values">
+    <item>0</item>
+    <item>1000</item>
+    <item>2000</item>
+    <item>3000</item>
+    <item>4000</item>
+    <item>5000</item>
+    <item>10000</item>
+    <item>12000</item>
+    <item>15000</item>
+    <item>30000</item>
+    <item>60000</item>
+  </string-array>
+  <string-array name="font_size_texts">
+    <item>Small</item>
+    <item>Medium</item>
+    <item>Large</item>
+    <item>Larger</item>
+  </string-array>
+  <string-array name="font_size_values">
+    <item>10</item>
+    <item>12</item>
+    <item>16</item>
+    <item>21</item>
+  </string-array>
+  <string-array name="thinking_arrows_texts">
+    <item>No arrows</item>
+    <item>Max 1 Arrow</item>
+    <item>Max 2 Arrows</item>
+    <item>Max 3 Arrows</item>
+    <item>Max 4 Arrows</item>
+    <item>Max 5 Arrows</item>
+    <item>Max 6 Arrows</item>
+  </string-array>
+  <string-array name="thinking_arrows_values">
+    <item>0</item>
+    <item>1</item>
+    <item>2</item>
+    <item>3</item>
+    <item>4</item>
+    <item>5</item>
+    <item>6</item>
+  </string-array>
+  <string-array name="scroll_sensitivity_texts">
+    <item>Off</item>
+    <item>Slowest</item>
+    <item>Slow</item>
+    <item>Normal</item>
+    <item>Fast</item>
+    <item>Fastest</item>
+  </string-array>
+  <string-array name="scroll_sensitivity_values">
+    <item>0</item>
+    <item>6</item>
+    <item>3</item>
+    <item>2</item>
+    <item>1</item>
+    <item>0.5</item>
+  </string-array>
+  <string-array name="book_line_length_texts">
+    <item>5 moves</item>
+    <item>10 moves</item>
+    <item>15 moves</item>
+    <item>20 moves</item>
+    <item>30 moves</item>
+    <item>50 moves</item>
+    <item>Unlimited</item>
+  </string-array>
+  <string-array name="book_line_length_values">
+    <item>5</item>
+    <item>10</item>
+    <item>15</item>
+    <item>20</item>
+    <item>30</item>
+    <item>50</item>
+    <item>1000000</item>
+  </string-array>
+  <string-array name="button_action_texts">
+    <item>Disabled</item>
+    <item>@string/flip_board</item>
+    <item>@string/toggle_analysis</item>
+    <item>@string/toggle_show_thinking</item>
+    <item>@string/toggle_book_hints</item>
+    <item>@string/toggle_pgn_variations</item>
+    <item>@string/toggle_pgn_comments</item>
+    <item>@string/toggle_pgn_headers</item>
+    <item>@string/toggle_large_buttons</item>
+  </string-array>
+  <string-array name="button_action_values">
+    <item></item>
+    <item>flipboard</item>
+    <item>toggleAnalysis</item>
+    <item>showThinking</item>
+    <item>bookHints</item>
+    <item>viewVariations</item>
+    <item>viewComments</item>
+    <item>viewHeaders</item>
+    <item>largeButtons</item>
+  </string-array>
+</resources>
diff --git a/DroidFish/res/values-ru/strings.xml b/DroidFish/res/values-ru/strings.xml
index e5ae5a1..ef5e92d 100644
--- a/DroidFish/res/values-ru/strings.xml
+++ b/DroidFish/res/values-ru/strings.xml
@@ -80,6 +80,15 @@
   <string name="load_next_game">Загрузить следующую партию</string>
   <string name="no_prev_game">Предыдущая партия отсутствует</string>
   <string name="no_next_game">Следующая партия отсутствует</string>
+  <string name="select_action">Выбрать действие</string>
+  <string name="flip_board">Информационное табло</string>
+  <string name="toggle_show_thinking">Переключатель вида мышления</string>
+  <string name="toggle_book_hints">Переключатель книжных подсказок</string>
+  <string name="toggle_pgn_variations">Переключатель вариаций</string>
+  <string name="toggle_pgn_comments">Переключатель комментариев</string>
+  <string name="toggle_pgn_headers">Переключатель заголовков</string>
+  <string name="toggle_analysis">Переключатель анализа движка</string>
+  <string name="toggle_large_buttons">Переключатель больших кнопок</string>
   <string name="cancel">Отмена</string>
   <string name="yes">Да</string>
   <string name="no">Нет</string>
@@ -229,6 +238,18 @@
   <string name="prefs_fontSize_summary">Размер шрифта для списка ходов и информации об игре</string>
   <string name="prefs_largeButtons_title">Крупные кнопки</string>
   <string name="prefs_largeButtons_summary">Использовать крупные кнопки для навигации в партии и в установках режима</string>
+  <string name="prefs_buttonSettings_title">Конфигурация кнопок</string>
+  <string name="prefs_buttonSettings_summary">Настройка размера кнопок и их действия.</string>
+  <string name="prefs_button_action_0_title">Основное действие</string>
+  <string name="prefs_button_action_1_title">Действие меню 1</string>
+  <string name="prefs_button_action_2_title">Действие меню 2</string>
+  <string name="prefs_button_action_3_title">Действие меню 3</string>
+  <string name="prefs_button_action_4_title">Действие меню 4</string>
+  <string name="prefs_button_action_5_title">Действие меню 5</string>
+  <string name="prefs_button_action_6_title">Действие меню 6</string>
+  <string name="prefs_custom_button_1">Пользовательская кнопка 1</string>
+  <string name="prefs_custom_button_2">Пользовательская кнопка 2</string>
+  <string name="prefs_custom_button_3">Пользовательская кнопка 3</string>
   <string name="prefs_colors_title">Настройка цвета</string>
   <string name="prefs_colors_summary">Изменить индивидуальные настройки цвета</string>
   <string name="prefs_chess_board">Шахматная доска</string>
@@ -459,7 +480,7 @@
     <item>1000000</item>
   </string-array>
   <string-array name="button_action_texts">
-    <item>Disabled</item>
+    <item>Отключен</item>
     <item>@string/flip_board</item>
     <item>@string/toggle_analysis</item>
     <item>@string/toggle_show_thinking</item>