I recently stumbled upon a document (le teris...) which was in declined in two versions: "CLL Lojban" and "modern Lojban". I don't understand why.
What is the status of "modern Lojban"? Is it a kind of beta / pre-release / proposal? Or is there a schism / fork, were a group prefer one version over the other?
What are (in a few words) the differences between the two? Why choose one or another?
Where is the reference documentation of "modern Lojban"?