FitNesse. SuiteAcceptanceTests. SuiteTestRunnerTests.
TestRunnerCanGenerateXmlReports [add child]

 Set Up: .FitNesse.SuiteAcceptanceTests.SetUp (edit)
The TestRunner has the option to generate and XML report. The idea being that another process may read the XML outputs and generate some other report. It has been suggested that the XML follow the JUnit format although it doesn't seem to fit.

Hold off for now.

example command line: java fitnesse.runner.TestRunner -xml stdout localhost 9123 PageName