Many tools have been built to analyze source. Most of these tools do not adequately support reengineering activities because they do not allow a software engineer to simultaneously perform queries about both the existing and the desired source structure. This paper introduces the conceptual module approach that overcomes this limitation. A conceptual module is a set of lines of source that are treated as a logical unit. We show how the approach simplifies the gathering of source information for reengineering tasks, and describe how a tool to support the approach was built as a front-end to existing source analysis tools.
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