Software archaeology - Wikipedia

Software archaeology or source code archeology is the study of poorly documented or undocumented legacy software implementations, as part of software maintenance.[1][2] Software archaeology, named by analogy with archaeology,[3] includes the reverse engineering of software modules, and the application of a variety of tools and processes for extracting and understanding program structure and recove

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“Software archaeology or software archeology is the study of poorly documented or undocumented legacy software implementations, as part of software maintenance.”