The French TeX User Group GUTenberg has been publishing The GUTenberg Letter, its irregular newsletter, since February 1993. For this purpose, a dedicated, in-house (La)TeX class was gradually created but, depending on new needs and on the people who were publishing the Newsletter, its development was somewhat erratic; in particular, it would not have been possible to publish its code as it was. In addition, its documentation was non-existent. The Board of Directors of the association, elected in November 2020, wished to provide a better structured, more perennial and documented class, able to be published on the CTAN. This is now done with the present letgut class.