Final answer:
To add a header in Filigree format to a document, use the header() function in the Filigree library. The header is automatically closed when the first line of output is sent.
Step-by-step explanation:
Adding a Header in Filigree Format
To add a header in Filigree format to a document, you can use the header() function in the Filigree library. The syntax for adding a header is:
header('Content-Type: text/html; charset=utf-8');
This sets the header content type to HTML with UTF-8 character encoding. To close the header, you don't need to explicitly close it. The header is automatically closed when the first line of output is sent.