Ashok,
Support for "see" and "see also" is not currently implemented, but planned. See
https://github.com/asciidoctor/asciidoctor/issues/2047. It's very doable. Input welcome.
We do not yet have plans (meaning an open issue) for range support. The critical piece is figuring out how to describe it so the syntax is consistent with the AsciiDoc language patterns. Feel free to open an issue and we can discuss.
Cheers,
-Dan