To colour certain objects according to their keynote, so we can locate them on a general plan or section view, and then put a colour legend which could be the keynote legend with a column showing each surface pattern and colour.
When we want to locate a repeating detail or solution, before explaining it in a detailed view, it's useful to have a general plan showing how many times it's applied on the building, and where are them. We use to call it a "key plan".
Using filters based on keynotes is quite easy to assign patterns and colours, so that we not only override the existing elements but also the newer ones, if we add some afterwards. The keynote legend allows us to list every type, but we need some kind of workaround to identify them.
Adding a grahpic column to show an image, a pattern or both, would give us an unequivocal and active identification.
