By default each window has two discrete panes. The right-hand pane—the text pane—shows the title ($Name), text ($Text) and Displayed Attributes ($DisplayedAttributes), if any.
So to ‘open’ a note you simply select it in the view pane by:
- clicking on it (any view type)
- using ↑ or ↓ to move the selection in a any listing type view.
A note doesn’t ‘open’ as a discrete window, in the way it used to prior to Tinderbox version 6. But, you can, if desired open a note as a stand-alone window as described here.
In a few contexts, hovering over an item will give a pop-over preview of that item’s $Text—see here.
If you want to shift input focus from the view pane selection to the selected note’s text ($Text) use Opt+Tab ( ⌥+⇥) Tab+[Opt]. This toggles focus in a cycle: $Text → first Displayed Attribute (if any) → view pane → $Text.
Tinderbox has a lot of keyboard shortcuts defined. The easiest way to get an overview is via my reverse-lookup map.
Hopefully it’s now clear as to why there is no description of this, because such an option—as you describe it—does not exist.
I’m guessing what you are trying to describe is moving focus from view pane to text pane (i.e. Opt+Tab).
Tip: did you know you can shift the selected note without leaving the text pane? Like so:
- Up Arrow+[Cmd]+[Opt]: Text pane focus: select previous $OutlineOrder item in main view (Outline/Chart/Treemap view)
- Down Arrow+[Cmd]+[Opt]: Text pane focus: select next $OutlineOrder item in main view (Outline/Chart/Treemap view)
I hope that helps orient you a bit better.