ATHENA Exchange With ATHENA Exchange you can save Revit families and their variants automatically as an exchange format for ATHENA. The file format is “*.ath”. The family parameters are written to an XML file and can be edited in ATHENA.After you have saved the modified drawing with an index and have updated the parameters, the drawings can be imported again quickly and easily. The corresponding families and optionally their parameters are updated. . Chapters in this documentation: • Step-by-step short-form instructions • Export families to ATH • Import families from ATH