Audio Settings is one of the setting categories. It contains settings about input.
Left-clik Orders Edit
Switches mouse inputs, so left-click does the orders and right-click cancels. This was the behavior on original Red Alert.
Edge Scrolling Edit
Sets whether or not putting the mouse cursor to edge of the screen move the view. Regardless of this setting, you can move the view with arrow keys or using Middle or Right-mouse buttons if enabled.
Scroll Zooming Edit
If enabled using Scroll-zoom Modifier key and mouse wheel, you can zoom in or out.
Lock mouse to window Edit
If enabled, on windowed mode, prevents mouse cursor to leave the game window.
Middle-mouse Scrolling Edit
Sets the scrolling method attached to clicking mouse wheel. Available values are:
Right-mouse Scrolling Edit
Sets the scrolling method attached to clicking right click. Available values are:
Scroll-zoom Modifier Edit
Sets the modifier key for Scroll Zooming, or if there should be a modifier key. Available values are:
Scroll Speed Edit
Sets the speed for scrolling the view. This effects all view scrolling methods.
UI Scroll Edit
Sets the speed for scrolling on UI elements.
Sets hotkeys for various things. For more info check Hotkeys page.