Most of the comments seem to be about the page design, for a page that was probably created in the 90s. Nevertheless, Emerald the language is pretty fascinating, and way ahead of its time (it was developed in the mid to late 80s). They had strong static typing, including getting co-/contravariance right a decade before Java got it wrong! It was the first object-oriented language that I know of to have a statically-typed structural type system. In fact, the technique that Go uses to implement dynamic dispatch was independently invented 20 years earlier in Emerald. And its objects were mobile, which very few languages even today attempt.