-- On the reverse side is a small plastic tab called the write-protect tab, which

can be slid aside. This tab provides a way of preventing the computer from

writing any information onto the disc, primarily to allow permanent storage

of files without fear of them being erased. You will probably be aware of a

equivalent tab on audio cassette tapes which serves the same purpose.

The illustration below shows how to insert a disc into the disc drive correctly:

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