No Graphics

     Sometimes it is required to run FIT2D without a graphics output window. This may be required because the output window cannot work properly across the network  . It may also be for batch  processing , which doesn't require any display. The -nographics command line option allows FIT2D to start-up and stop without the graphics display window being opened. Clearly, this makes many commands invalid, and is only valid when the ``keyboard'' interface is being used. (The -nographics option can be shortened to -nogr, and alternative forms are equally permissible: -NOGRAPHICS, +nographics, +NOGRAPHICS).