I've recently gotten back into (thanks to cyber1 and Brian Dear's book) PLATO and its TUTOR language, which despite being weird from a modern perspective makes

I've recently gotten back into (thanks to cyber1 and Brian Dear's book) PLATO and its TUTOR language, which despite being weird from a modern perspective makes making interactive lessons (its initial purpose) easy. I've always wondered why we don't have a modern equivalent to TUTOR, but Idyll looks (despite obviously having a very different syntax), to be filling a very similar niche.