html_write:html_set

/usr/lib/swipl/library/ext/http/http/html_write.pl

http
- http

html_set_options(+Options) is det

Set options for the HTML output. Options are stored in prolog flags to ensure proper multi-threaded behaviour where setting an option is local to the thread and new threads start with the options from the parent thread. Defined options are:

dialect(Dialect): One of html4, xhtml or html5 (default). For compatibility reasons, html is accepted as an alias for html4.
doctype(+DocType): Set the <|DOCTYPE DocType > line for page//1 and page//2.
content_type(+ContentType): Set the Content-type for reply_html_page/3

Note that the doctype and content_type flags are covered by distinct prolog flags: html4_doctype, xhtml_doctype and html5_doctype and similar for the content type. The Dialect must be switched before doctype and content type.