Dear list, when I stumble upon a slightly overhanging line (where it's not allowed to hyphenate the hanging word and putting it on next line leaves huge whitespaces), decreasing letterspacing in that line seems like a good idea, and I manually insert \kerncharacters commands to do the trick. Here's a MWE for the purpose of demonstration: % ConTeXt code \setuppapersize[A5] \setupbackgrounds[text] [rightframe=on,framecolor=red,rulethickness=0.1pt] %right margin line \setupalign[hz,hanging] % microtypography enabled \definefontfeature[default][default][protrusion=quality,expansion=quality] \definetypeface[mainface][rm][specserif][Linux Libertine O] [default] \setupbodyfont[mainface,14pt] \mainlanguage[russian] \setupindenting[yes,medium,first] \starttext {\kerncharacters[-0.018] Здесь будет длинный-предлинный текст, \mbox{в~коем}} никак нельзя перенести строку. Запрещено { \kerncharacters[-0.008] разрывать телефонные номера, например, \mbox{(000)1234-5678}}, многозначные числа и дефисные написания. \stoptext Is the a way for automating such negative tracking? ---------------------------------- Best regards, Alexander Dyomin