No, sorry I wasn't clear on this. The truncated power series (TPS) data
that is the output of taylor(), has an internal form that is either psrat or
hrat in lisp, has its own special display program that knows how to order
terms and also put "..." at the right side of the expression.
But if you change such an expression to "ordinary" form, the terms are
displayed in reverse order. If you nevertheless want to see them ordered as
a power series, EVEN THOUGH THEY are NOT a TPS ... set powerdisp:true.
Compare:
s:taylor(exp(x),x,0,5);
ratdisrep(s) ;
powerdisp:true;
ratdisrep(s);