How to get back a hidden part of the mesh when alt+H is not working in Blender - Quora
Blender shortcut keys: How to find, manage, change, and reset - Artisticrender.com
Hotkeys on viewport — Right-Click Select
Is there a shortcut or setting to auto hide-all-children by hiding a parent? (because it sucks to expand a tree, hide several children, rinse, repeat) : r/blenderhelp