Reusable

The ultimate goal of FAIR is to optimise the reuse of data. To achieve this, metadata and data should be well-described so that they can be replicated and/or combined in different settings. 

R1: (Meta)data are richly described with a plurality of accurate and relevant attributes

Yes, but it is up to users to provide accurate and relevant attributes in the metadata.

R1.1: (Meta)data are released with a clear and accessible data usage license

Yes. On Authorea, four kinds of usage licenses can be assigned to scholarly content (and they also apply to any underlying data and materials): Non-exclusive, no reuse; CCBY 4.0;  CC0 1.0; MIT.

R1.2: (Meta)data are associated with detailed provenance

Yes. Posted scholarly articles on Authorea can be cited giving detailed provenance (and version history) for both the full text, data, and research materials associated with the article.

R1.3: (Meta)data meet domain-relevant community standards

Partly. Similar to I2 (\ref{269274}), only Authorea's JATSXML meets community standards.