## Moving the Cursor

Once the plot is loaded, two thin lines become visible (see screenshot below). In the following they are referred to as cross-hairs. Both lines are exactly one pixel wide. The intersection between the vertical and the horizontal line defines the cursor position. The current x,y coordinates of the cursor are displayed in the Coordinate Display tab in the Tool Box. Move the cursor (cross-hair) using the `arrow-up`, `arrow-down`, `arrow-left` and `arrow-down` keys. The step size is 1 pixel. If you want to move the cursor faster (in larger increments) press the `Shift` key together with the respective `arrow` key. Alternatively you can also use the mouse. Press the left mouse close to the cursor, i.e., the intersection of the cross-hair lines, and drag it while keeping the mouse button pressed. Even quicker is double-clicking the left mouse button to make the cross-hair step to the current mouse/pointer position. On some platform/screen combinations and depending on your screen settings, step sizes smaller than one pixel are possible using the `Alt` (`Option`) key together with the referring arrow key. This is useful for increasing the precision for good quality plots. The cursor moving options are summarized in the table below.

Keys | Steps
--- | ---
arrow | normal, 1 pixel
shift+arrow | fast, 10 pixel
alt(option)+arrow | fine, 0.1 pixel (where available)
left mouse button drag | arbitrary
double mouse click | to position

Depending on the color scheme of your plot, the red default color of the cross-hair might be not the best choice. The color can be changed via the `Edit->Cross-hairs Color...` menu item. Pick a color that contrasts well with the color of the data points and the background.

Hint: For moving the cursor quickly over the plot the mouse & double-click is certainly faster but use the arrow keys when placing the markers and especially when placing the cursor for the actual scan.