Documentation looks much nicer now (or at least more familiar).
Test cases become ugly because we need to double the escape in
strings. Also escaping requires \"\\" which in a Scheme string
gets written \\"\\\\". Consider \\ as a shortcut (which is still
\\\\ in a string).
This was never a portable aspect of SXML before because in earlier
standards @ was an illegal identifier, but it is allowed in R7RS.
Scribble requires escaping with @|@| to pass through a raw @ symbol.
Considering using \ as the default scribble escape instead.
