The movement has been highly decentralized. On the West Coast, an early seed of language poetry was the launch of "This" magazine, edited by Robert Grenier and Barrett Watten, in 1971. "L=A=N=G=U=A=G=E", edited by Bruce Andrews and Charles Bernstein, ran from 1978 to 1982, and was published in New York. It featured poetics, forums on writers in the movement, and themes such as "The Politics of Poetry" and "Reading Stein". Ron Silliman's poetry newsletter "Tottel's" (1970–81), Bruce Andrews's selections in a special issue of "Toothpick" (1973), as well as Lyn Hejinian's editing of Tuumba Press, and James Sherry's editing of ROOF magazine also contributed to the development of ideas in language poetry. The first significant collection of language-centered poetics was the article, "The Politics of the Referent," edited by Steve McCaffery for the Toronto-based publication, "Open Letter" (1977).