Online the index links (internal document links) work. Within Logos 4 they do not show/behave as links. Also making "index" a title causes the entire index list to disappear.
Reading Lists do not support manually-generated tables of contents.
Support for hierarchical headings and an automatically-generated table of contents in the Reading Lists pane is an idea we've already logged in our internal bug database (but aren't currently working on).
Available Now
Build your biblical library with a new trusted commentary or resource every month. Yours to keep forever.