Color map legend
The legend shows the correspondence between colors in the field picture and their numerical values. In the legend window, you can manipulate the range of the color plot:
Click within the color bar and hold mouse button while moving up or down to narrow (zoom in) the range to the positions where the button was pressed and released.
Double-click within the color bar to return the range to its default setting.
The legend can be copied to clipboard as picture. Before that you may want to change from color plot to gray scale for monochrome printing. These commands are available in the context menu (activated by right mouse button).