The complexity of Orion: an ALMA view - I. Data and first results L. Pagani, C. Favre, P. F. Goldsmith, E. A. Bergin, R. Snell and G. Melnick A&A, 604 (2017) A32 Published online: 31 July 2017 DOI: 10.1051/0004-6361/201730466