John, I can't tell you which ".ist" file you require, but here is one that does what I want with e-plain (but to be honest, I write my own index entries, I don't use e-plain to do so); it also intended for use with XeTeX, whence the Unicode range-dash : > line_max 32767 > delim_0 "~$\\,$" > delim_r "‒" Philip Taylor