This is brillant! Absolutely fantastic and works really well! One comment: The "none" option is only available in the "more options"/the preferences. I am curious to hear what the reason for this is? (Also asking because in the post above you list four options, indicating that these are equally useful). I obviously have zero data on this, but I would imagine that users might find the "none" option as useful as the others, so would suggest to add it to the right click menu.

A connected observation: The "none" option is equal to being able to collapse the field with an arrow, which is available for all the other items (info, abstract, attachment, notes etc) in the right hand column. Would't it make sense to be consistent here and give the header an icon and a downward arrow to be able to collapse the header section as well?

Also, obviously without having data, and simply extrapolating from my own puzzlement that prompted the initial suggestion, I would suggest to make "title, creator, year" or full bibliography the default rather than "title". I find "title" the least helpful version to have up there. This is particularly true now that the title field has been re-added to the item info.

In my view, the main reason why I need any info in the header is to make sure that I actually look at the correct item. But in cases where this matters, say if there is both a book and an article by the same author with the same title, then only having the title is of little help.

One comment: The "none" option is only available in the "more options"/the preferences. I am curious to hear what the reason for this is?

Because if you choose None, the header disappears and there's no way to add it back from the item pane. If you haven't found the settings (which More Options takes you to), you wouldn't have any idea how to get it back.

But we could maybe consider adding None there and adding a Show Item Header option to the Info context menu.

Would't it make sense to be consistent here and give the header an icon and a downward arrow to be able to collapse the header section as well?

It's not a bad idea, but I think it would be too messy. A collapsed header wouldn't take up any less space than a one-line title, which largely defeats the purpose of being able to hide it. And an icon and arrow would cut into the available width, along with just adding visual clutter to the top of the pane.

I would suggest to make "title, creator, year" or full bibliography the default rather than "title"

We definitely wouldn't make "Bibliography Entry" the default — that's just not relevant for many users. We haven't ruled out making "Title, Creator, Year" the default, but I think it has a similar problem.

This is really great and helpful especially the full Bibliography Entry.
1-Is it possible to add an option to quick copy as citation from the right click menu of the header (or shortcut as CTRL + Shift +A working when hovering over header in a way similar to when clicking over tab)?

2-Is it also possible to add an option of ""copy citation of current page" to the right click menu?

3-Adding the same options of "copy as bibliography", "copy as citation", "copy citation of current page" to the right click menu of the pdf tab will be also really helpful.

Sorry for too many demands and thank you very much for all your great efforts and support

@adamsmith: But Quick Copy might be set to a different style than the header. I don't see us adding an option to copy a citation, though — it makes sense to provide a way to copy the bibliography entry just because it's visible, but starting to copy other things just based on the style that's selected for the header is confusing. That's what Quick Copy is for.

@mjthoraval: You would have to use a custom citation style for that, yes. Turning bibliographic data into an arbitrary formatted string is exactly what CSL is for. ("Bibliography Entry" doesn't inherently "contain all the information" — it contains whatever the citation style you've chosen includes.)

I don't know if we've tested bibliography entries containing newlines (or if there are any, or if CSL supports that), but let us know if that's not working.

@adamsmith Thank you very much. That looks very nice.
I was looking into adding a line break in a citation style with the Visual CSL Editor, without success:
https://editor.citationstyles.org
The search by example does not seem to accept line breaks:
https://editor.citationstyles.org/searchByExample/

Is there an example of a citation style with a line break in the Visual CSL Editor so that I can learn from it? Or will your example by available there?

This is great!

The only real downside I could see to the "Bibliography" version is that its harder to quick-edit the title.

This is very helpful, thank you. And thank you @Adam Smith for the preview format as well. I would also echo the request to somehow set the title apart a little bit. Any chance to set the color of the text through the biblio preview format?

This is a huge improvement in usability. Thanks so much.