Finding references for an in-/output

How to find references (i.e. usages) for an →input variable, →output variable or →in-/out variable within the interface editor of an FBD-object and how to switch to a found reference:

1. From the context menu of the variable or of several selected variables, select Find References.
   Result: logi.CAD 3 lists all found references for the variable in the Search view. The first level lists the name of the variable the second level lists the references.

2. Expand the first level (if necessary). Click a listed reference on the second level.