something like this splitting?

Axel Vogt — Fri, 04 Jan 2013 21:01:07 Z

I use M16.02 with classical interface and do not have such problems,
line break according to window size (see interface/screenwidth).

But occasionally I use something for printing to post it later. For splitting
a string in M V.3 you have to care by yourself, StringTools is somewhat newer.

split_for_print:=proc(expr, len)
# expr = some Maple expression
# len  = length to split with line breaks
  local L,s,tmp,j;
  s:=convert(expr, string);
  L:=[StringTools:-LengthSplit(s, len)];
  for j from 1 to nops(L) do
    if j = nops(L) then printf("%s", L[-1]) 
    else printf("%s\\\n", L[j]); 
    end if;
  end do:
end proc;

evalf[300](Pi);
split_for_print(%, 40);

3.14159265358979323846264338327950288419\
7169399375105820974944592307816406286208\
9986280348253421170679821480865132823066\
4709384460955058223172535940812848111745\
0284102701938521105559644622948954930381\
9644288109756659334461284756482337867831\
6527120190914564856692346034861045432664\
821339360726024914127

Thanks for your response, but you are answering

Doctorleff — Sat, 05 Jan 2013 07:39:17 Z

Thanks for your response, but you are answering the wrong question. I am outputting troff or more precisely

input to the geqn preprocessor to troff. How do I say

x := long complicated espression

readlib(eqn);

eqn(x);

The troff only shows a single line which is too long to fit on the screen.

MaplePrimes - answers and comments on Question, eqn output split long lines

something like this splitting?

Thanks for your response, but you are answering