>>>> I am currently working on some galley-related code, and looking at the >>>> e-TeX extensions to Knuth's paragraph-breaking penalty system. The roles >>>> of \clubpenalties, \widowpenalties and \displaywidowpenalties are clear, >>>> and it seems reasonable to provide a documented interface to these >>>> primitives. On the other hand, \interlinepenalties Context uses it in \keeplinestogether, but I don't see why they couldn't have used \clubpenalties instead. I don't understand the difference between \interlinepenalties and \clubpenalties as described in etex_man: - the ith interline penalty value is used after line i of the paragraph; - the ith club penalty value is used after line i of a partial paragraph; All other hits on Google are either irrelevant, l3names, context, or on the german ctt (perhaps some info there). -- Bruno