Referring to a Dropdown
:name: makes a dropdown a cross-reference target, exactly like the
:name: on an image, a table or a code block. The name becomes the id of
the <details> element, so a link lands on the summary bar.
The installation steps
Anything can go here; what matters is that the dropdown above can be linked to.
A link to it: dropdown-installation.
Targets written inside a dropdown work too, since the body is ordinary content:
A link to that one: dropdown-inner-target.