Hi, I am trying to learn Metapost using Context. I tried a few examples for drawing things and they worked well. But the "show" command does not seem to work. For example, the code \startuseMPgraphic{GridDots} u=1cm; pickup pencircle scaled 8pt for i = 0 upto 2: for j = 0 upto 2: draw (i*u,j*u); endfor endfor \stopuseMPgraphic \useMPgraphic{GridDots} from John Hobby's manual works great. However, the following code gives no output in the PDF file. Am I doing something wrong? \startuseMPgraphic{LinearEq} a+b = 2a - b = 3; show a,b; \stopuseMPgraphic \useMPgraphic{LinearEq} I am using the following version from Texlive ConTeXt ver: 2008.05.21 15:21 MKII fmt: 2008.10.1 int: english/english Thanks for your help.