+<tag>5</tag>
+ <item>All control fields are now classified as simple, folded, or
+ multiline, which governs whether their values must be a single line or
+ may be continued across multiple lines and whether line breaks are
+ significant.
+ </item>
+<tag>5.1</tag>
+ <item>Parsers are allowed to accept paragraph separation lines
+ containing whitespace, but control files should use completely empty
+ lines. Ordering of paragraphs is significant. Field names must be
+ composed of printable ASCII characters except colon and must not begin
+ with #.
+ </item>