<letter>
The <letter> tag is a root-level document type for formal letters. Like
<article> or <book>, it organizes
front matter, a body, and back matter, but with structures such as
salutations, signatures, and addresses suited to correspondence.
Syntax
Attributes
This tag has no attributes.Children
This tag must be empty (i.e., no children or text allowed).Parents
This element may appear as an immediate child of the following elements:<pretext>