<since> and <until> for the lastmod: prefix right below the date:
prefix description give the impression one could use last modified
dates to lastmod: which is not at all the case. Use
<initial-revision>..<final-revision> instead.
-- lastmod:<since>..<until>
+- lastmod:<initial-revision>..<final-revision>
The **from:** prefix is used to match the name or address of the sender
of an email message.
The **from:** prefix is used to match the name or address of the sender
of an email message.