Fully open tree

At the moment, as soon as you open one branch of a tree, if an existing one is open that then one closes.

It would be better if you could have several or all branches open simultaneously, as this would make scanning on the topics currently of most interest ten times faster than having to open and close each branch one by one. Less beneficial but why not also folders within folders just like Explorer's tree?

Just take a look at advanced

Just take a look at advanced settings.