On 2013–01–22 Mojca Miklavec wrote:

> Doesn't it already have the highest priority?

I did assume that, but that's not the case. Take your t-gnuplot.tex
module, for instance, make some changes and place it in $TEXMFHOME.
ConTeXt still uses the old version found in

texmf-modules/tex/context/third/gnuplot/t-gnuplot.tex

Marco