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
125 B
9x9px
125 B
9x9px
![](/Sakurai/pdf.js/raw/commit/f41d80bdd3e9d384da45a295cedbe9825700194f/web/images/treeitem-expanded.png)