Hi I have problems with special characters in URL's. What I wanted at first place, is embedding a google chart image, so I've tried this: \starttext \externalfigure[{https://chart.googleapis.com/chart?cht=p3&chs=250x100&chd=t:60,40&chl=Hello|World}] \stoptext which fails with: ! Undefined control sequence. system > tex > error on line 3 in file test.tex: Undefined control sequence ... as far as I can tell it's the "|" symbol where it has problems. I came across this thread: http://www.mail-archive.com/ntg-context@ntg.nl/msg25806.html but no solution there either. Then I've tried to move from externalfigure to useURL, but the same problem exists. For obvious reasons I don't want to use url shorteners, as with this kind of URL I can manipulate the resulting image inside the tex source. Any thoughts or solutions? Adam