Global hotkeys (default values):
Double Ctrl => Show main window (with translation of selected text, if any)
Ctrl+Q => Translate selected text and show it in popup window
Ctrl+Shift+Q => Show dictionary window
Ctrl+E => Listen to selected text

Main window hotkeys:
Ctrl+Enter => Translate text
Ctrl+N => Clear current translation
Ctrl+D => Show dictionary
Ctrl+Alt+1..9 => Show dictionary with selected 1..9th translation service
Ctrl+H => Show translation history
Ctrl+K => Show virtual keyboard
Ctrl+Tab/Ctrl+Shift+Tab/Ctrl+1..9 => Switch to the next/previous/1..9th translation service
Shift+Esc => Reset language pair to auto-detected
Ctrl+Shift+1..9 => Select language pair
Ctrl+I => Swap translation direction
Ctrl+Space => Show suggestion/autocomplete menu
F1 => Show help
F11 => Turn on/off full-screen mode
Alt+Left Arrow => Go to the previous translation
Alt+Right Arrow => Go to the next translation
Ctrl+Up => Copy translation to the text input box

There are three modes of translation by mouse selection:
  1) Show icon (select text in a program -> QTranslate icon will appear near cursor. Click the icon -> popup window with the translation of selected text will appear);
  2) Show translation (select text in a program -> popup window with translation of the selected text will appear immediately);
  3) Show translation and read (the same as previous plus speaking aloud selected text). 

Actions:
  - Left click on QTranslate icon in system tray turns on/off mouse selection mode (see above);
  - Double click on QTranslate icon in system tray shows the main window;
  - Double click on the popup window's header opens the main window with current translation;
  - Left mouse click on the name of a service changes the current service and translates text;
  - Middle mouse click on the name of a service opens the service in the browser;
  - Right mouse click on the name of a service adds service to the services multi-selection.
