Brett Littman, Director of the Drawing Center, and New York artist Lawrence Weiner discuss the 'Drawing in Progress' exhibition held at mima in 2010. A notable highlight of this show was a major commission for the 5002 metre glass façade of mima by Lawrence Weiner. After visiting Middlesbrough in May 2010 Weiner developed the 24-hour artwork A LINE IS A LINE FOR ALL THAT, 2010. This is the single largest commission ever produced by Weiner in the UK. The exhibition showcased works by artists that have transformed drawing in dynamic ways, helping to move beyond its historical conventions and parameters and changing the way drawing might be produced and viewed. Brett and Weiner discuss these and other issues raised by the exhibition.