It is this kind of interpretation tasks, which can be performed most efficiently by humans. But they cannot be successful, if the overall image is illegible. Scrolling around is often a means to overcome such deficiencies, but not appropriate for this purpose. The library may have to cope with material for three levels of users, i.e. novice, advanced and expert users depending on the amount of interaction allowed. The data may consist of ready-made images, maps and images that cannot be modified , sometimes not even zoomed in or copied.
Buttons allow for simple selection.
There may be referencing possibilities to comments or annotations like texts or sounds. The user is thus presented with some kind of slide show, with a guided your or a free choice of the image sequence. Opening windows in parallel for comparisons is usually not possible in this case. The advantage versus a series of paper maps is just the quicker access but with a resolution that is worse. Form under which a digital database is delivered.