[NTG-context] Tolerance and Stretch versus Protrusion and Ugliness

Hi there, at the moment I use for my book \definepapersize[MyBook][A5] \setuppapersize[MyBook][A5] \usemodule [simplefonts][size=11pt] \setmainfont[Times New Roman][expansion=quality,protrusion=quality] \setupalign [hanging] \setuptolerance[stretch] \tolerance 70 Is it suitable to use tolerance and stretch in this way together? Of course I want a nice type area - but for me that means that I definitely don't want a word written in the margin! (That happens with the default \tolerance 250 (without using stretch). What would you recommend? Are there other values to play with, to get a better result? Thanks Huseyin