Mono features and caveats of CLI languages?

Question

.NET

Hello. Interested in the features of Mono (implementation of .Net), and specifically its differences from the "original" .Net on Win. My guess is that Mono doesn't implement all the features of .Net, or that the version of Mono doesn't match the latest .Net.
Also interested in CLI-languages. Troelsen mentions "major caveats" when compiling languages ​​that conform to the CLI specification in the CIL. It is not specifically stated what kind of reservations. Very interesting. It is possible that not all features of a particular PL can be implemented in CIl (i.e. some constructs cannot be translated into CIL). Or something different? It is not necessary to paint, if possible briefly. Thank you!

Answer 1

features of Mono... its differences from the "original" .Net

www.mono-project.com/docs/about-mono/compatibility
Probably, we are talking about the fact that not all languages ​​support all the features of IL, and in order for libraries to be used normally in a multilingual environment, some restrictions must be followed - CLS (Common Language Specification) . It is better to read about this in Richter.