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  1. or download this
    for $foo ('a'..'c') {
        open FH,'|-', 'cat -';
    ...
     5
     1
     2
    
  2. or download this
    for $foo ('a'..'c') {
        open FH,'|-', 'cat -';
    ...
    =c=
     1
     2
    
  3. or download this
        if (not_implicit) {
            IoLINES(io) = 0;
            IoPAGE(io) = 0;
            IoLINES_LEFT(io) = IoPAGE_LEN(io);
        }