PDF bookmark questions

[Nate Whetsell]

I’m trying to add PDF bookmarks (to display in PDF readers) to a collection of 
studies. I’m having three issues:

1. If several studies appear on the same page, the bookmarks appear in reverse 
order.

2. The bookmarks seem to navigate to the *page* on which a study appears, not 
the study itself.

3. It doesn’t seem to be possible to add PDF bookmarks without also using 
`\markuplist \table-of-contents` to add a table of content.

Below is an example illustrating the issues I’m having. Is there a way to 
create PDF bookmarks without using `\markuplist \table-of-contents`, have them 
appear in the expected order, and have them navigate to the expected position?

Thanks,
Nate

```
\version "2.22.0"

\book {
  \markuplist \table-of-contents

  #(do ((study-number 1 (1+ study-number)))
      ((> study-number 15))
    (let ((header (make-module)))
      (module-define! header 'piece (number->string study-number))
      (let* (
          (score (scorify-music #{
            \new Staff <<
              \tocItem \markup { #(number->string study-number) }
              \new Voice { c' }
            >>
          #})))
        (begin
          (ly:score-set-header! score header)
          (add-score score)))))
}
```