-the arrow keys are currently pretty broken for navigating through the tree. This needs to be fixed and other modifiers/keys added to be able to jump up and down level.
also the caret should only be able to go in structures with repetition optionality, i.e. where you could add a new element just by typing (currently the caret appears at the top level and you can just add in anything...)
-the arrow keys are currently pretty broken for navigating through the tree. This needs to be fixed and other modifiers/keys added to be able to jump up and down level.