11845.md

A heading's bookmark is written inside the heading's paragraph, around its
text, rather than around its whole section, so a link to the heading
survives a docx round trip, and a screen reader meets the bookmark at the
heading (#11845).

```
% pandoc -f markdown -t docx -o - | pandoc -f docx -t native
# Costs {#price}

Back to [costs](#price), on to [later](#later-part).

# Later Part

End.
^D
[ Header 1 ( "costs" , [] , [] ) [ Str "Costs" ]
, Para
    [ Str "Back"
    , Space
    , Str "to"
    , Space
    , Link ( "" , [] , [] ) [ Str "costs" ] ( "#costs" , "" )
    , Str ","
    , Space
    , Str "on"
    , Space
    , Str "to"
    , Space
    , Link
        ( "" , [] , [] ) [ Str "later" ] ( "#later-part" , "" )
    , Str "."
    ]
, Header
    1
    ( "later-part" , [] , [] )
    [ Str "Later" , Space , Str "Part" ]
, Para [ Str "End." ]
]
```