I have received a reply from drums about changes to ABNF. Some of
these changes affect our documents.
The changes are (for draft 3):
1) ranges are now specified with a hyphen, e.g. %x41-5A
2) ranges cannot be used with strings, e.g.
ALPHA = "A"-"Z" is no longer allowed,
instead one must use
ALPHA = %x41-5A / %x61-7A ; A-Z / a-z
3) the list notation with "#" no longer exists.