[NTG-context] btex ... etex in .mp

Hi! I remember reading somewhere that you can't use btex ... etex in "input" .mp files, as there is no possibility for them to be processed at that time. I've hit a snag, though, and this would really be a good thing for me to have. Is there any way to get similar behavior? Basically, I want to define some stuff that I want to reuse in several pictures. nikolai -- ::: name: Nikolai Weibull :: aliases: pcp / lone-star / aka ::: ::: born: Chicago, IL USA :: loc atm: Gothenburg, Sweden ::: ::: page: www.pcppopper.org :: fun atm: gf,lps,ruby,lisp,war3 ::: main(){printf(&linux["\021%six\012\0"],(linux)["have"]+"fun"-97);}