MUMPS was a kinda cool language - I liked it a lot better than VB6 which the GUI was written in. Every line had to start with a command like 'set' or 'do', which was abbreviated as 's' or 'd' which looked pretty gnarly. The `for` loop syntax there was a difference between 1 or 2 spaces which after the 'f(or)' :o There was a max file size and filename and function limit of like 6 characters, so things were named pretty cryptically. It had a built in object database and basic array and hash datastructures which were neat though.