Flow headings confusion

Can someone in the know help me understand how Flow headings differ from other text frames with a few tokens inside of them? As far as I understand, one chooses which frames contain what by tampering with Page templates in the Engraving Mode. What confuses me is the fact that you toggle Flow headings on and off from the Layout options. Are they something more than just another green box with tokens inside? Why don’t we toggle the text frames with the composer names or the project title from Layout options?

Flow Headings are similar to page templates – you can edit them in the same way using the right-hand panel in Engrave mode – but they are not a complete page, but text (or graphic) frames that get added to the music frame.

As you’ve observed, you can turn them on or off in the Layout Options. Perhaps the best way to understand how they are used is something like an instrumental part:

Each Flow gets a heading with the flow number and title. That heading sits at the top of each flow’s music (if it has any).

Because that would require a large group of toggles in Layout Options for every Token. Flow Headings lets you build your own headings, with whatever tokens and other text you want.

I still don’t get it. I mean I do get how they work and know how to disable them, but I don’t get the logic behind it. Why wouldn’t I define the way Flow headings show or don’t show from the Page templates, where I define every other text frame’s existence. It’s as if they enjoy an elevated status in the world of text frames.

You can hide/show flow headers in all versions of Dorico (SE, Elements and Pro) but you can only change page templates in Pro.

Because within a page template, the positioning of each frame is fixed on the page.

Flow headings need to appear anywhere on a page: sometimes at the top, sometimes near the bottom. And they need to be able to move fluidly if the music changes (like if you add more bars, which creates a new system, which pushes the next flow’s heading down the page).

Ok, thanks.