Does the order matter within each metadata tag (eg scheme=x lang=”en” or vice versa)?
Except that the element name (with its qualifier, if used) must appear first in the tag, the order of other qualifiers within the tag does not matter, although it is usual in HTML to put content (the value) last. Note that you do not use lang and scheme in the same tag and it is not necessary to use the “lang” attribute of the metadata if it is in English.
