The preservation community 642-642 as a whole would benefit tremendously from the development of backward compatibility paths that would be included as a standard feature of all software. Backward compatibility or migration paths would enable a new generation of software to "read" data from older systems without substantial reformatting and without loss of retrieval, display and computational capabilities. Although backward compatibility is increasingly common within software product lines, migration paths are not commonly provided between 642-825 competing software products or for products that fail in the marketplace.
Stewards of digital material have a range of options for preserving digital information. One might preserve an exact replica of a digital record with complete display, retrieval, and computational functionality, or a representation of the record with only partial computation capabilities, or a surrogate for the record such as an abstract, summary, or aggregation. Detail or background noise might be 642-892 dropped out intentionally through successive generations of migration, and custodians might change the format or storage media.
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