To select a source-entity: double-click on it; its color will
change from blue to orange. Consequently, this source-entity will be the only
one to be consulted for a given entity. Note: If you select a source-entity then the related entity
will be automatically selected in the graph of entities.
You can also exclude a source-entity, which means that this
source will not be used to find instances of this entity.
To exclude a source-entity, use the popup-menu (right click) and click on
the item Exclude/Include. Note: It does not make sense to select a source-entity and to exclude
another source for the same entity. Thus any exclusion will remove the
selections and vice versa.