2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/161765In this paper, we discuss the problem of the software engineering of a class of business spreadsheet models. A methodology for structured software development is proposed, which is based on structured analysis of data, represented as Jackson diagrams. It is shown that this analysis allows a straightforward modularisation, and that individual modules may be represented with indentation in the block-structured form of structured programs. The benefits of structured format are discussed, in terms of comprehensibility, ease of maintenance, and reduction in errors. The capability of the methodology to provide a modular overview in the model is described, and examples are given. The potential for a reverse-engineering tool, to transform existing spreadsheet models is discussed.8 Pages, 7 FiguresSoftware EngineeringD.1.7; D.2.1; D.2.11; D.3.2; D.3.3; H.4.1; K.6.4; K.8.1text