Thanks for all the suggests. This is indeed what I want. I will expand the `answer' part, because sometimes students have to draw stuff on a grid or into a given graph, but I can continue from here.
Regards, Hans On 21/06/09 11:46PM, Keith Marshall wrote: > Apologies for any confusion, which this may have caused: > > On 09/06/2021 23:28, I wrote: > > he should have: > > > > .de SOLUTION > > . if (\\n[s] == 0) .ig SOLEND > > . br > > .. > > .de ENDSOL > > . \" Any clean-up required, at end of solution. > > .. > > Of course, my ENDSOL macro should, rather, have been called SOLEND: > > .de SOLEND > . \" Any clean-up required, at end of solution. > .. > > -- > Regards, > Keith