Comment by int_19h

I wouldn't be so dismissive of Algol 68. It wasn't particularly successful in production, but then neither was Algol 60. OTOH conceptually the former feels closer to modern PL design, with a greater emphasis on consistency and orthogonality. And if we're talking about specific features that ended up in other languages, well - the C keywords "void", "struct" and "union" all came from Algol 68.