Dear participant, allow me to complement my yesterday's message, since some announcements seemed not entirely clear to everyone: On Sunday, there will be student helpers, both at the airport and at the train station, to welcome you and to guide you to the shuttle. At the train station, they will wait for you close to the info point, in the lower level of the main hall. If you have questions about arriving in Linz and local transportation, please have a look at the conference website: https://www3.risc.jku.at/conferences/opsfa2019/index.php?content=travel If you still have questions, please contact us. I wrote: > All lecture rooms are equipped with a projector and a blackboard. > If you plan to give a presentation using electronic slides, please > use your own computer or discuss with your session chair Here is an update: All lecture rooms also do have a desktop computer that is connected to the projector and that can be used for the presentations. These computers have Windows installed. After the conference dinner, the buses will bring you back to the Sommerhaus hotel. For those who are not staying in Hagenberg: one of the buses will continue to Linz and drop you off at Johannes Kepler University. From there you can take the tram to go the center (or wherever you want). Best wishes, Christoph Koutschan and Peter Paule (Organizing Committee)