If it fits with the objectives of ORM2 and NORMA,
multi-page models offer some advantages. If each page
is centered on an important Object Type, it's easier
to impart some granularity, and even hierarchical
structure to the model overall. It also serves to
keep large models from getting visually confusing.
This way, the modeler can focus on a given major axis
of the U. of D. That, in turn, helps envolve
knowledge workers primaraly concerned with that
particular area of interest, without the distraction
of facts not relevent to thier experince.