Undocumented nkey types

[bcheidemann]

$ nk --help
Usage: nk [options]
...
    -gen <type>           Generate key for [user|account|server|cluster|operator|curve|x25519]
...

The nk CLI lists the server and cluster nkey types. However, there appears to be no documentation for what these are, or how to use them.

I would expect there to be some documentation available for each of the supported nkey types.

I'm guessing these may be for planned (future) features? If so, perhaps they could be documented as such to avoid sending people on wild goose chases =P

Note

Since I'm not sure which is the appropriate repo to raise this issue, I have also raised an issue here. Apologies for the duplication.