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Degree
to which a particular format depends on particular
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hardware,
operating system, or software for rendering or use
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and
the predicted complexity of dealing with those
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dependencies
in future technical environments.
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Some
interactive digital content is designed for use with
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specific
hardware, such as a joystick.
Scientific datasets
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built
from sensor data may require specialized software for
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analysis
and visualization.
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External
dependencies will make content more difficult and
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costly
to sustain than static content. The specialized software
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required
by some scientific datasets may itself be very
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difficult
to sustain.
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Examples:
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Adobe
eBooks require a Microsoft Passport account.
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Open
eBook format is free of external dependencies
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