export(f=i->i^2+1);
parsum(i=1,1,f(i))
parsum(i=1,10,f(i))

\\ errors
f(i)=z=3;i^2+1;
export(f);
parsum(i=1,10,f(i))

f(i)=local(z);i^2+1;
export(f);
parsum(i=1,10,f(i))

f(i)=local(z=3);i^2+1;
export(f);
parsum(i=1,10,f(i))
