The Graph Panel provides controls for altering the attributes of the visible display of the spectrum, aside from the actual spectral data. These attributes include fonts, colors of non-spectrum objects, borders and whether or not axes are displayed. Together these are useful, not only for altering the onscreen appearance, but also allow you to change the appearance in a way that will be suitable for publication quality output.

Fonts can be changed by clicking on the word Axes (to set the font used for tic and axis labels), Crosshair (to set the font appearing in the crosshair position display) or Peaks (to set the font used for drawing peak labels on the spectra) in the Fonts section. A font chooser dialog will appear in which you can change the font family, style and size for the corresponding items.

When displaying spectra that are homonuclear in the two displayed dimensions (proton COSY or NOESY, for example) it can be useful if the cross-hairs are constrained so that the position of crosshairs 1 and 2 are mirrored across the diagonal. This can be turned on by clicking the SymMode checkbox. Then, if the crosshair 1 (typically the black one) is pointed at, for example, 7.0,3.0 ppm, then crosshair 2 (typically the red one) will automatically be moved to 3.0,7.0 ppm.

The colors of the background, axes, and crosshairs are displayed as colored squares. Clicking on these squares will display a color chooser dialog with which the values can be changed. Alternatively, you can choose from a set of predefined schemes by clicking on the "Schemes..." buttun. This will display a choice of color schemes for these four parameters. Click on the desired scheme and then close the scheme dialog.

The size of the borders, these are the areas in which the axis labels are drawn at the four edges of a spectrum, can be set by changing the values in the "Borders" section. The values are specified as the number of pixels between the edge and the axis line.

The Axes section controls the appearnce of the the two axes, and a grid. Whether or not axis labels and tick marks are drawn is controlled for the vertical and horizontal axis by the two checkboxes in the "Axes" section. The AxisWidth parameter controls the linewidth of the axis. By default, the tick mark positions are automatically calculated to give a reasonable spacing of major tick marks. You can change this by explicitly entering a tic mark spacing in the Tic Delta X and Tic Delta Y fields. If the values are set to 0 then automatic calculation of the spacing will be done. Grid lines are drawn across spectrum if the Grid checkbox is set. By default, the axis units are in PPM, but this can be changed with the selector to the right of the Grid checkbox.