Hi there, I haven't updated my ConTeXt distribution for a very long time (for the internet connection problem here) and somehow my network worked, so I use ctxtools --update to make an update. During the updating, I got some error message like "I can't find mult-def.tex" and some other files more. Weird, because I do have those files and kpsewhich can locate them. I just input the needed files WITH the path and seemed OK. To make sure, I made another ctxtools --update and this time no error messages. Anyway, I compiled a used-to-be-working file and failed because some "Undefined control sequence" and I found the "undefined" macros are the \c!xxx and \v!yyy macros which I defined them in \startvariables all yyy: yyy \stopvariables \startconstants all xxx: xxx \stopconstants any explanations? -- Best Regards Chen ---------------------------------------------------------------- Zhi-chu Chen | Shanghai Synchrotron Radiation Facility No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China tel: 086 21 5955 3405 | zhichu.chen.googlepages.com | www.sinap.ac.cn ----------------------------------------------------------------