html_write:layout(+Tag,
-Open, -Close)Specify the layout conventions for the element Tag, which is
a lowercase atom. Open is a term Pre-Post.
It defines that the element should have at least Pre newline
characters before and Post after the tag. The Close
specification is similar, but in addition allows for the atom -empty,
telling the library that the element has declared empty content. In this
case the close-tag is not emitted either, but in addition html//1
interprets Arg in Tag(Arg) as a list of
attributes rather than the content.
A tag that does not appear in this table is emitted without
additional layout. See also print_html/[1,2].
Please consult the library source for examples.
