6. The communications network of claim 5 wherein said receiving display station further includes: means for storing digital representations of said screen pages, and wherein said means for sampling said visual information density samples said stored representations.
5. In a computer managed communication network with user access via a plurality of data processor controlled interactive display stations and with a system for displaying in display screen windows documents transmitted to a receiving display station from locations remote from said stations, said documents including at least one display screen page containing visual information including text, the improvement wherein at least one of said display stations comprises: means for determining a more significant page edge, means for sampling a visual information density at a sequence of horizontal positions in a medial direction with respect to said more significant page edge, means for comparing each sequential sample of said visual information density to a selected density level, and means responsive to said comparing means for positioning said visual information in said window with respect to a reference margin determined by a sample of said visual information attaining said selected density level.