Shortcodes are placeholders, surrounded by square brackets, that WordPress will automatically replace with longer text.
Some shortcodes are shown here with [[double]] brackets to prevent their associated function from being triggered within this document. You should always use only SINGLE brackets when placing shortcodes in your documents.
Page lists
Use [child-pages] or [subpages] to insert a table of contents, if the current page has child pages assigned to it. Parent pages with no content will display this list automatically - that is, you can create empty pages to organize subpages and provide sensible navigation into the deeper hierarchy levels.
...
Footer content
You can use [[site-title]] to display the site name, as specified in Settings > General.
...