The Focus function

The focus function applies to entities part of a hierarchy: it allows resetting the selection on the tree while keeping the occurrences selected on the chosen entity.

For example, suppose you have selected the San Diego from the City entity. As a consequence of the hierarchy, the State entity will have a selection on California. Applying the Focus function on the state California first resets the selection on the hierarchy to all items then applies a selection on California. All cities from California become selected.


To apply the Focus function,