Is there a need to restructure VSS branch/instance structure to better support ontologies

Some topics related to discussions at the AMM

**What is a branch**

* Do we need a possibility to give additional metadata in VSS model to indicate type of branch (like `branchtype: xxx`)?
* Or do we just need to define when a branch shall be used and possibly adapt the tree accordingly

**Instance Handling**

Instances have a specific syntax in VSS, but as part of the tooling process we expand them so they become branches just as any other branch. Does this approach work well for ontologies? How is VSSo as of today generated? Before/After expansion

We should also possibly think about a long term solution for the VSS <-> VSSo relationship. Possible to (always) generate VSSo from VSS, or better generate VSS from VSSo?