Description
Each rustdoc page has a [+] icon in the top right, which can be used to expand all / collapse all docs:
It also has a series of toggles along the left edge, to expand and collapse specific sections:
And a settings page to set which types of things are collapsed and expanded by default:
The left-hand toggles are ephemeral - they aren't remembered across page loads. The settings page settings are durable - they are remembered across page loads. Right now the [+] in the upper right is durable. That's surprising, since it looks the same as the non-durable left hand toggles, and isn't visible in the settings page. Also, it can be used via the + / - keyboard shortcuts, where it might not be as clear that someone is triggering a settings change.
I think we should change the [+] in the upper right to be ephemeral. If someone wants to durably hide all docs (or durably show all docs), the settings page settings should accomplish that.