!3 You can save and recall symbols in a !-ColumnFixture-!.  You do this by using the =id? and id= syntax.

 * =id? or =id() takes the output of a function and stores it in the symbol named by the cell.  In the example below the integer 1 is stored in the symbol ''one'', and the integer 2 is stored in the symbol ''two''.
 * id= recalls the value of the symbol named by the cell, and puts it in the ''id'' variable.

!|fitnesse.fixtures.ColumnFixtureTestFixture|
|input|=output?|
|1|one|
|2|two|

!|fitnesse.fixtures.ColumnFixtureTestFixture|
|input=|output?|
|one|1|
|two|2|

'''With classed integral types, there's a chance the value may be null as a correct result:'''
!|fitnesse.fixtures.ColumnFixtureTestFixture|
|integerInput|=integerOutput?|
|1|one|
|2|two|
|null|three|

!|fitnesse.fixtures.ColumnFixtureTestFixture|
|integerInput=|integerOutput?|
|one|1|
|two|2|
|three|null|

{{{
public class ColumnFixtureTestFixture extends ColumnFixture
{
  public int input;
  public int output() {return input;}

  public Integer integerInput;
  public Integer integerOutput() { return integerInput; }

  public boolean exception() throws Exception {throw new Exception("I thowed up");}
}
}}}