Hi,

When \asciimode is set some version info is printed instead of the
graph. Example:

\usemodule [gnuplot]
\asciimode

\starttext
  \startGNUPLOTscript [foo]
    plot sin(x)
  \stopGNUPLOTscript
  \useGNUPLOTgraphic [foo]
\stoptext

Marco