Alfons Zettler has recently identified another criterion that the authors of the Plan may have followed for the layout of the structures, which does not follow the cardinal points but is determined by a clockwise direction starting and ending at the abbot's house. He argues that the basis of the organisation would have been a division of public/private and lay/monastic which is represented in the Plan by an increasing lay presence in each sector of the monastery when moving around the cloister clockwise from the infirmary.