6th Symposium on languages, applications and technologies SLATE 2017, June 26–27, 2017, Vila do Conde, Portugal - Queirós, Ricardo 1975-; Pinto, Mário Teixeira 1967-; Simões, Alberto; Leal, José Paulo; Varanda, Maria João (OASIcs - OpenAccess Series in Informatics, 2017)