To the Outline pane (made collapsible since v0.8.15), please add Collapse All button, for folding all levels of children.
A) Today which part of Obsidian has Collapse all button
- Search pane
- Backlinks pane
- Editor (keyboard shortcut)
B) Where else we need collapse all
- Outline pane
- (Obsidian’s) File Explorer pane pls upvote here