FitNesse. UserGuide.
ColumnFixtureCode [add child]

package eg;
import fit.ColumnFixture;

public class Division extends ColumnFixture {
public double numerator;
public double denominator;
public double quotient() {return numerator/denominator;}

Input variables must be public.

If the fixture declares the method public void execute() it will be called after all fields have been loaded, but before any output methods have been called.