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.
