Key points are not available for this paper at this time.
This paper reports on a software understanding experiment during corrective maintenance of large-scale software. Participants were professional software maintenance engineers. The paper reports on the general understanding process, the types of actions programmers preferred during the debugging task, and the level of abstraction at which they were working. The results of the observation are also interpreted in terms of the information needs of these software engineers during the debugging task.
Mayrhauser et al. (Wed,) studied this question.