ANGULAR TREEMAPS - Information Visualisation: Techniques, Usability and Evaluation - page 103

Fig. 5.14. Task 2 with one focus illustration 2: N0.3.5 contained on level 2 is
highlighted.
Fig. 5.15. Task 3 with two focus illustration: Angular Treemaps emphasizes two
focuses on different levels. The nodes of N.0.2 on the first level and N.0.4.1 on the
second level are rotated.