Dear all, 1. I have used \startalign many times before without tag and it worked well. Thanks Aditya. now, I tried to set a tag for an equation using \NR[+]: But there is no reference numbers in the output. Since there is no mention about this problem in the list, I think that it is my only problem, Should I do something special for this? \starttext \startformula\startalign[align={middle, left}] \NC x \NC = n\times r, \NR[+] \NC y \NC = {{n-1}\choose {r-1}}, \NR[+] \NC z \NC = (n-1)\times {r}, \NR[+] \stopalign\stopformula \stoptext 2. Is there a command to reduce the width of the space between letters? For some Korean fonts, the space between letters is a little bit wide. I think that it is not a simple command, it may be very difficult job for me. However, is there a way to do that? My system is Mac OSX 10.6, ConTeXt Minimal ver: 2010.11.12 18:22 MKIV. Thank you for reading. Best regards, Dalyoung