  Various software features such as classes, methods, requirements, and tests
often have similar functionality. This can lead to emergence of duplicates in
their descriptive documentation. Uncontrolled duplicates created via copy/paste
hinder the process of documentation maintenance. Therefore, the task of
duplicate detection in software documentation is of importance. Solving it
makes planned reuse possible, as well as creating and using templates for
unification and automatic generation of documentation. In this paper, we
present an interactive process for duplicate detection that involves the user
in order to conduct meaningful search. It includes a new formal definition of a
near duplicate, a pattern-based, and the proof of its completeness. Moreover,
we demonstrate the results of experimenting on a collection of documents of
several industrial projects.
