Machine Tag (MachineTag) used by the Free Archive crawler. The machine fa prefix name space is used by the automated tools for the Free Archive project.
fa is the dedicated namespace for the freearchive project.
You have two main action available and understood by the bot.
required.
fa:archive without any value specify the action to get the machine tagged URI and archive it. This action is often used for mirroring a single document located at the specified URI.
required.
fa:mirror is mirroring the tagged URI and archiving the file containing the mirrored URI.
The level of recursion is 2 by default.
optional.
fa:type="pdf"
optional.
fa:mirror="2" specify the level of recursion to 2.