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 4 types of icons, each one referring to a specific mouse transformation:
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blue viewfinder: mouse coordinates received by the Windows message processing routine as defined by USER32 SetWindowLong(GWL_WNDPROC) system call. |
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yellow viewfinder: mouse coordinates received by the Windows hook callbacks defined by USER32 SetWindowsHookEx system call. |
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green viewfinder: mouse coordinates of the POINT pt field of Windows messages extracted from the message queue with USER32 PeekMessage/GetMessage calls. |
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red viewfinder: mouse coordinates returned by the USER32 GetCursorPosition system call. |