Among many features of WSO2 G-REG listed here there is one which states that in G-REG you can "store any type of data or metadata" (etc. Word documents). How to do that? Because I don't see any options to do that in a management console.
Users are provided to add common service information through standard service metadata formats like using WSDL (Web Services Description Language) files, Policy file and schema files. User have to give the location of their WSDL, Policy or Schema files from local file system or as a URL, Governance Registry is importing those information in to Registry as resources. All the special resources are having their own Media Type which will be useful to users to handle them convenience way.