Hi! Sorry. OK I admit I might have been confusing. Although I got some good ideas from the messages. Thanks.
Let me try again: So I got this big textfile. It's full of data from a database. About 200 or more rows or lines in a textfile. There's three first rows that belong to the same subject. And then next three rows belong to another subject and so on, to the end of the file. What I need to do, is put the three rows that goes together and belong to certain subject, on a one single line in the output textfile. And that goes with the rest of the data to the end of the new file. Thanks. OV
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