This announcement refers to Notebook 7 having a Table of Contents, and the User Documentation / New features in Notebook 7 section states that ‘… the Table of Contents is built-in and enabled by default’. Only, it does not seem to be. When I run Notebook 7 there is not TOC, and I can’t find any menu or toolbar button to activate it.
On the MyBinder-sourced example (click here to launch an example session), from the File menu bar at the top you select ‘View’, then ‘Left Sidebar’ > toggle on ‘Show Table of Contents’ so that is displayed.
Short version: It seems that this combination requires explicitly setting JUPYTER_PATH=/opt/homebrew/share/jupyter JUPYTER_CONFIG_PATH=/opt/homebrew/etc/jupyter before running jupyter, although there seem to be some other specific problems with the notebook interface — i.e., lab and nbclassic work with these variables set, but notebook fails (differently in 7.0 and 7.0.1).
Are any others experiencing these issues? Are any devs aware of this and planning a fix?