That could be some BASIC or things like that, am I right? If so, no wonder that you didn't know.
Most of you here went the MS-DOS way. I had the luck to be able to go the Unix way and still have access to those great games developed under DOS. (Great DosBox!) I think that
- regexes were could be maybe only dreamt of when you were doing programming,
- and they were heavily bound to the Unix way. (Now they aren't; it's such an useful and mighty tool that they are available under nearly every language and nearly every platform. Nearly.)
P. S.: Even in my short life I managed to make some experience with BASIC. A friend of mine had a BASIC-programmable calculator! (Sadly, the batteries rapidly deteriorated and now the whole calculator is just a dead artifact.) We would sit next to each other, in the row at the far side of room. We wrote a math test on quadratic equations (which are solved by applying a simple formula) and were permitted to use a calculator. So we had used it and after running the program for every equation given we drank toasts of victory. (It was just a tea and its taste was rather frightening. But we've won!)
