!3 You can put arrays of objects into ColumnFixture fixtures.

!|fitnesse.fixtures.ComplexAddFixture|
|a|b|sum?|
|1,2|3,4|4,6|

{{{
public class ComplexAddFixture extends ColumnFixture
{
  public int[] a;
  public int[] b;
  public int[] sum() {
    return new int[] {a[0]+b[0], a[1]+b[1]};
  }
}
}}}