This is perhaps more of a TeX question, and I'll take it to comp.text.tex next. But I encountered a problem when using \index in ConTeXt. I had my doc formatted exactly the way I wanted. But after I added \index entries throughout, I found that the line-breaking of some paragraphs had changed. The text became "looser", not packing quite as densely. Small changes, but significant to my layout. Experimentation showed that substituting "\strut" for "\index{...}" had the same effect. These should be invisible, and I don't see anything added, but the line-breaking is changed. I'm reading Eijkhout's chapter on "Line Breaking" in "TeX by Topic" but am not sure how to interpret it. Have I introduced "glue preceded by a nondiscardable item"? Would that be less breakable than the simple space that was there before? -Bill -- Sattre Press The King in Yellow http://sattre-press.com/ by Robert W. Chambers info@sattre-press.com http://kiy.sattre-press.com/