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<p>that is no longer supported on standard hardware and environments, and is a codebase that is in some respect <a href="page.php?w=obsolete">obsolete</a> or supporting something obsolete. Legacy code may be written in programming languages, use <a href="page.php?w=Software_framework">frameworks</a> and external libraries, or use <a href="page.php?w=Software_architecture">architecture</a> and patterns that are no longer considered modern, increasing the mental burden and ramp-up time for software engineers who work on the codebase. Legacy code may</p><p>
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