How to make a .Net or JVM language?

Question

I am seeing all these new languages for .NET and JVM. How does one begin to make one?

I can\'t find any good documentation on JVM or MSIL specifications.

Answer 1

MSIL isn't called MSIL any more, as a public standard it's CIL (Common Intermediate Language), part of the CLI (Common Language Infrastructure) standard.

Here's the ECMA-335 CLI standard specification.