Displays and order

Displays

Three choices, on the menu bar item under Displays:

All Displays	The same bar on every one. The default.
Each Display’s Own Windows	A bar on every display, but each lists only the applications with a window on that display.
Main Display Only	A bar on the display with the menu bar, and nowhere else.

In the middle mode, your pinned shortcuts, the Apps Menu, the Trash and the clock stay on every bar — a shortcut is not on a display the way a window is, and a second bar without a launcher on it would be a worse bar. So does anything with no window open.

That mode needs Accessibility: without it Eskele cannot see which windows an application has, let alone where they are, so every display shows the same bar — which is what All Displays does anyway. It also asks each window where it is, which is one more Accessibility call per window, so Eskele only makes that call in this mode and only when there is more than one display to tell apart.

Order

Order decides how the applications run along the bar.

As Arranged	The default, and the only one that reads layout.json’s order as an instruction.
By Name	Sorted the way the Finder sorts, so App 10 follows App 9 rather than App 1.
By Launch Time	Oldest first, which makes the bar a history of the session.

The two automatic orders use the stored order as a tie-break, so equal items never swap places between rebuilds. Applications that are not running have no launch time, so under By Launch Time they keep their stored order and follow the ones that do.

Two things change while the order is not yours

Separators are hidden. A divider earns its place by sitting between two things you put on either side of it, and once the machine is choosing the order it is a line between two arbitrary neighbours. They stay in layout.json and come back with As Arranged.

Dragging an item switches the order back to As Arranged. Arranging something by hand is a statement that you want it arranged by hand; without that, the drop would be saved and then immediately sorted away, which looks like the bar refusing to move.

Only the applications are affected. Pinned folders and files keep their place after them, and the Trash keeps its end.