The name for a page, generally used to identify page content and purpose.
As part of the overall set of page elements, the page title can be toggled off and on, as well as positioned, at the page layout level.
The page title can be revised (edited) from any block on a page: simply edit the block, and the title becomes editable too.
The page URL generally will match the page title (with "+" between words); however, If the title does contain special characters, the page URL will be a unique numerical page ID.