EWA tutorial (IMAGE) Graz University of Technology Caption Tutorial tasks provide an introduction to working with the EWA tool. Credit ISDS - TU Graz Usage Restrictions Only for use in relation to the content of this news release. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.