Superblog builds a table of contents for each post from its headings. Readers can jump to any section, and search engines can show those sections as links in results.

Turn it on or off for the whole blog

Go to Settings > Advanced and tick or untick Show table of contents.

By default the table lists the post's Heading 2s. Tick Include H3 subheadings to list Heading 3s under them.

The setting applies to every post. The editor has no switch for a single post.

Get a useful table of contents

Structure your post with Heading 2 for each main section and Heading 3 for the parts inside it. A post with no headings has no table of contents. See Write in the editor.