The "Move Scan Devices to Mouse" button

This button is only available in microscope control mode. If you click this button, the X and Y scan devices of the currently displayed scan will be moved to the current mouse cursor position (if you want to center the next scan at that spot). Of course, this only makes sense if the sample hasn't been exchanged between the time that scan was taken and now.

You might want to turn on the crosshair to display the current mouse cursor position by doing Extra $\rightarrow$ Display Crosshair on Mouseclick Position.