From: https://github.com/glushchenko/fsnotes/issues/315#issuecomment-409561580
Return steps towards the right (in)
⌘+Return steps towards the left (out)
but it's not easy to see which column you are in (except if you can see the cursor when in the note)
I think perhaps current focus could be better represented through highlight colours?
left (folders/tags list)

middle (note list)

right (note content)

I think it would also be cool if you could use ⌘+left/right arrow to navigate — I never realised return and ⌘+return did anything in this context.
@jeff-h love that idea
I like @gingerbeardman's suggestion:
blue = selected with focus
grey = selected without focus
Keyboard shortcuts to navigate are important but I'm not sure Command-Left Arrow and Command-Right Arrow would be the best choice. I say that because these shortcuts are commonly used (including in FSNotes) as a document shortcut:
Command–Left Arrow: Move the insertion point to the beginning of the current line.
Command–Right Arrow: Move the insertion point to the end of the current line.
Good point! If we think of each column as tabs, how about (from previous apple link) reusing some of these shortcuts (ignore what it says they do here)
Command–Left Bracket ([): Go to the previous folder.
Command–Right Bracket (]): Go to the next folder.
Command–Up Arrow: Open the folder that contains the current folder.
Command–Control–Up Arrow: Open the folder that contains the current folder in a new window.
Command–Down Arrow: Open the selected item.
My preference would be to use Command-Left/Right Bracket to navigate. Currently they are shortcuts for Format > Shift Left/Right, but perhaps these could be changed to something different.
Command-Up/Down Arrow are fairly important document shortcuts that move the cursor to the beginning and end of a document. I wouldn't change those.
In Safari, I change between tabs using Cmd+Shift+Left/Right it just occurred to me now that might be suitable?
That's certainly a possibility. If the FSNotes menu bar contained a menu item for this (as there is in Safari), then users would have the option to change the shortcut to whatever they like.
My preference would be to use Command-Left/Right Bracket to navigate. Currently they are shortcuts for Format > Shift Left/Right, but perhaps these could be changed to something different.
In code editors at least, these shortcuts are very widely expected to do exactly what they currently do in FSNotes — ie indent / de-indent. Even Xcode has this... thus I'd strongly hope they stay as-is because I write code a lot lol