Kaya: Library documentation: HTMLDocument::writeTo (devel version)

Void writeTo(HTMLDocument doc, Void(String) output, UnicodeFormat uform=LiteralUTF8)

doc: The HTML document
output: A function that outputs the strings given to it (using Prelude::putStr@() is equivalent to write)
uform: The mode for handling multibyte UTF-8 characters. LiteralUTF8 will give a smaller String, readable in Unicode-aware applications. NumericReference will give a larger String, especially if multibyte characters are very common in the text, but will work better if the String will later be edited in non-Unicode applications. This argument is optional, and defaults to the recommended LiteralUTF8, but you may wish to use NumericReference if the output is not Unicode-aware, for example.

Print a HTML document with a specified output function. This is considerably more efficient than output(string(doc));