We occasionally might need to add new value types (e.g. the recently added [immutable instances](Immutable-instances-in-RefPerSys)....)
We occasionally might need to add new value types (e.g. the recently added [immutable instances](Immutable-instances-in-RefPerSys)....) before the [primordial bootstrap milestone #2](https://gitlab.com/bstarynk/refpersys/-/milestones/2)
Here are the steps (in commit eafc9ef86e229c2f4340263c6 or later) to do that:
* design the new type (e.g. *Foo*). How is it named? Should it be persistent? How could it be displayed? printed?
