> * What CL calls a system is roughly analogous to what most other languages call a package.*

Or a crate, or an artifact, or a module, or a gem, and there's probably other variations I can't remember off-hand.

> * What CL calls a package is what other languages call a namespace.*

Or a module, or a package, or... actually, I don't know what Perl or Ruby call it. I believe C calls it a header, but that's not quite the same thing as a package.

Turns out naming things is difficult (as well as cache invalidation, off-by-one errors concurrency, and).