3.9) Keyboard shortcuts

After writing a long message (to be posted to a discussion board or sent to a game opponent), it is not too convenient to look for a mouse, in order to click the Submit button. Paying members have a possibility to activate keyboard shortcuts, which allow them to perform certain mouse actions with the keyboard only - for example Ctrl-Enter key combination submits the text without any mouse clicks, which is a well known feature included in instant messengers.