But if you write another file at the current position, the second tape mark will be erased by the new information, leaving only one tape mark between files. Another usual case is that you do not write all the archives the same day, and you need to remove and store the tape between two archive sessions. In general, you must remember how many files are already saved on your tape. Suppose your tape already has 16 files on it, and that you are ready to write the 17th. In all the previous examples, we put aside blocking considerations, but you should do the proper things for that as well.
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