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/6e22b323727091734d36658b276d05140e7ea8bc/web/images/treeitem-expanded@2x.png)