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