Combined with LiveView or taken image the Crosshair mode can help in alignment tasks like: Drift Alignment, GoTo Alignment, Precise mode checks for Meade mounts and everything that needs a benchmark.
Here are some key combination that gives more control over the Crosshair:
Hold the Shift + Left Mouse Button and move mouse to change the place of the cross center.
Hold the Control + Left Mouse Button and move the mouse horizontally to rotate the cross.
Shift or Control + Double Click with the left mouse button will restore the initial centered cross position.