The 14th International Conference on Developments in Language Theory (DLT 2010) was held in London, Ontario, Canada on the beautiful campus of the University of Western Ontario. It was a four-day conference starting August 17 and ending August 20, 2010. The DLT conference series is one of the major international conference series in language theory. It started in Turku, Finland in 1993. Initially, it was held onceeverytwoyears. Since2001, ithasbeenheldeveryyear, oddyearsinEurope and even years in other continents. The papers submitted to DLT 2010 were from 27 countries all over the world,...