SCO relationships

[garanews]

Looking the documentation about SCOs:
https://docs.oasis-open.org/cti/stix/v2.1/csprd01/stix-v2.1-csprd01.html#_Toc16070680
It seems there are defined only the relationships for 3 entities: domain, ipv4, ipv6.
In this repository I see users suggest new relationships for process, file, etc.
Wondering if you're working on a documentation for such kind of relationships.
Thanks

[ejratl]

The document that you are referring to is the first committee spec. I recommend always referring to the OASIS Standard version which is a year newer: https://docs.oasis-open.org/cti/stix/v2.1/os/stix-v2.1-os.html
but new external relationship were not added between these version. New relationship objects can be defined as extension objects in the stix-common-objects repo. I am one of the users who requested the new relationships, so it is on my todo list to create the extension objects for them. The WG is not working on a document for new external relationships at this point.

[SYNchroACK]

Related to #320