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/91b27aae46888d12c415c24ea7bdb7ac9516b1c0/web/images/treeitem-expanded.png)