| 1. | Watermarked files contain special bit patterns that can be detected without decryption.
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| 2. | The other two possible bit patterns indicated no indexing, or indirect addressing.
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| 3. | These were positioned to maximize the Hamming distance between their bit patterns.
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| 4. | The bit patterns 0101 and 0110 indicate that the sync cycles will continue.
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| 5. | This ensured a clearly defined magnetic space between bit patterns.
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| 6. | Put another way, they have fairly regular bit patterns.
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| 7. | ;Starting delimiter : Consists of a special bit pattern denoting the beginning of the frame.
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| 8. | Electrical contacts in the camera read the bit pattern.
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| 9. | The automatically generated data are commented, documenting with ASCII art how the bit patterns were derived.
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| 10. | Logical operations are used to convert a numeral to its equivalent bit pattern or reverse the process.
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