[a] := [('a','b','c')];
[b] := [('A','B','C')];
[c] := [(1,2,3)];
for i=1,3 do !!(a[i]:char,b[i]:char,c[i]:1) od;
;{note the :char and :1 suffixes. The former}
;{causes the element to be printed as a char}
;{instead of a numerical ASCII code, and the}
;{:1 causes the integer to take up exactly one}
;{space, ie. no leading or trailing spaces.}