4.5.2.a xforms-compute-exception Hello world! xforms-compute-exception 4.5.2.a xforms-compute-exception You may see an xforms-compute-exception message. Processing must halt after dispatching an xforms-compute-exception with implementation-specific error-message in the event context information. Processor specific testing is required to listen for the xforms-compute-exception and provide the error-message. You must not see 'Hello world!' beneath this paragraph. You shouldn't see this :