"type", "array", and "Natural" are all specialized computer science or mathematical terms. "My_Arr" is just as mysterious as the rest of them and unless you're

"type", "array", and "Natural" are all specialized computer science or mathematical terms. "My_Arr" is just as mysterious as the rest of them and unless you're familiar with variable binding, you'll just lump that symbol in with the rest of them (some unknown sigil of magical power). I suspect most people will have a good idea of what "is" is and of what "of" is. I bet most people would also understand ranges, so 1..10 is probably fine as well. So, what your first line should be if we were really spelling things out: classification definition named: "My_Arr" is: "list (1..10)" which will contain: "numbers zero and greater but without decimals" But you aren't spelling things out. You're using specialized terms to reduce the amount of typing you have to do because the terms in question happen to come up frequently. Welcome to the club.