This command shows a status window with icons that help in tracking the mouse position as seen by the target program after the coordinate scaling transformations:

The icons will show in a window space that corresponds to the virtual desktop resolution. There are 6 types of icons, each one referring to a specific mouse transformation:

blue square viewfinder: mouse coordinates received by the Windows message processing routine as defined by USER32 SetWindowLong(GWL_WNDPROC) system call.

yellow square viewfinder: mouse coordinates received by the Windows hook callbacks defined by USER32 SetWindowsHookEx system call.

green squares viewfinder: mouse coordinates of the POINT pt field of Windows messages extracted from the message queue with USER32 PeekMessage/GetMessage calls.

red squares viewfinder: mouse coordinates returned by the USER32 GetCursorPosition system call.

red square viewfinder: mouse coordinates returned by the DirectInput methods.

gray square viewfinder: mouse coordinates returned by the SDL calls.