| Site Title, Site Tagline, Site Logo, Site URL | The site’s own. |
| Page Title | The title of whatever is being viewed. |
| Internal URL | The address of a chosen page, post, term, media file, author or post type archive. |
| Current Date Time | Now, in the site’s date and time format or a custom one. |
| Request Parameter | A value from the address (?ref=…), a form post or a query var. |
| Shortcode | The output of any shortcode. |
| User Info | The logged-in user’s display name, username, first or last name, bio, email, website, or a meta field. |
| User Profile Picture | Their avatar. |