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To run FIT2D on Unix systems simply enter fit2d < RETURN> on
the command line.
On Windows systems you may either run FIT2D from a command window
as on Unix systems, or click on a FIT2D icon. If necessary FIT2D will open a ``terminal window'' for text output, and keyboard input.
A ``welcome'' banner should appear in the terminal window with the
version number of the program. If this does not happen check with your
system administrator that FIT2D has been installed and that your
PATH is properly defined (see Section 25.1,
Page ).
After the header information a graphics window should be started as
a separate X-11 window.
If FIT2D cannot open the graphics window for some reason it will
output an error message in the terminal window with suggested causes of
the problem and possible solutions. If no error message appears, but
the graphics window does not appear, check the definition of the
DISPLAY variable e.g. printenv DISPLAY < RETURN>. Other potential
start-up problems are covered in Section 25.2,
Page .
Assuming everything has been set-up properly, the graphics window should have been opened and FIT2D will be waiting for graphical input in one of four buttons: CONDITIONS, I ACCEPT, HELP or DON'T ACCEPT.
Whilst FIT2D is running keep the terminal window visible, even when running in the graphics mode. Useful information, warning, and error messages often appear in the terminal window.
Andy Hammersley