Hierarchy classification:

1. top of the aat hierarchies
2. Styles and Periods Facet
3. Styles and Periods (hierarchy name)
4. [styles, periods, and cultures by region]
5. European
6. Medieval styles and periods
7. Medieval (European)
8. Medieval regional styles
9. Northern European Medieval styles
10. British Isles Medieval styles
11. British Isles Medieval architecture styles
12. Decorated Style

Anotations

Scope note:

Refers to the earlier phase of the decorated style in the late 13th century, when window tracery was composed of geometrical patterns such as circles, arcs of circles, and cusps, but before the patterns evolved into undulating curves.