4.14 "implementation" seems to cover both the compiler and execution environment

Current text:

> **implementation**
> particular set of software (running in a particular translation environment under particular control options) that performs translation for, and supports execution of methods in, a particular execution environment

I'm not sure what a "translation environment" is, or what this would mean for (say) the existing C++-based compiler implementation.

Is this term deliberately covering both a compiler and a CLI implementation? I think it may well be okay to do that, and let the usage context differentiate, but we should make that decision consciously.