Modelling the human factors aspects of a computer-based text-graphics layout system

In converting task listings into multiple pages of documentation for job aids or training, the two major problems are deciding on how much material should go on each page and how text and graphics should be laid out on the page. A questionnaire study was used to collect input from fourteen human factors personnel in order to design algorithms for page splitting and page layout. From the rules or heuristics used for page-splitting, an algorithm was devised which closely matched human page-splitting results. Layout of individual pages was automated with an algorithm based on the (significant) consensus among the subjects on questions of graphics positioning and label ordering. The two algorithms have been combined in a Computer Aided Design Procedure which automatically pages task lists and lays out individual pages.