RosettaCodeData/Task/File-input-output/PL-I/file-input-output.pli

declare in file, out file;

open file (in) title ('/INPUT.TXT,type(text),recsize(100)') input;
open file (out) title ('/OUTPUT.TXT,type(text),recsize(100') output;
do forever;
   get file (in)  edit (line) (L);
   put file (out) edit (line) (A);
end;