It may be difficult to understand the correctness of the preferred terms position. CodeSells Thesaurus Builder simplifies the thesaurus preferred terms tree for the current selected term. In the ‘Terms Simple Tree’, all levels of superordinate (broader) terms and only one level of subordinate (narrower) terms of the focused term are shown.
By double clicking on each term in the 'Terms Simple Tree', it will be focused in the 'Hierarchical Relationship Tree View'.