Title
A heading on the options page. It starts a new section: the fields after it belong to that section, until the next layout field.
In the editor

| Setting | What it does |
|---|---|
| Title | The text of the heading. |
| Additional CSS Class(es) | Extra CSS classes for the heading. |
On the options page

The title is an <h2>, like the section titles on the settings pages of WordPress itself.
The value
A title stores nothing.