It appears to me that the `expanded/collapsed` part of the names got switched around, since I'd expect the following convention: - `v` == expanded - `>` == collapsed
172 B
18x18px
172 B
18x18px
![](/Sakurai/pdf.js/raw/commit/e93512f1eba0ec92c9318210024daf4ed8e5f24d/web/images/treeitem-expanded@2x.png)