Overlay - is a part of PC Client Application in firescreen games. It shows who is currently in your group, players’ statuses, marks players who are speaking and more.
Also an overlay allows sending a text message to players who are not in the same room with you and to players who use PC Client directly. Type "/w" then a user name of a player whom you want to send a private message. Type "/r" then a room name to send a message to specific room.
To enable an overlay just press an button "Show overlay". To disable it press the button again.
To choose overlay style:
Go to PC Client settings.
In the list select "Оверлей".
Choose on of predefined themes."
To make own theme:
Choose on of predefined themes.
Press button "Copy".
Enter a name for a new theme.
Use provided controls to customize overlay.
To save it press "Оk" button of the main window.