Need a bit more information. What do you want to do with it? What is the input data type, or are you wanting to do something with a given string (cut off a part or insert something into it or?)
You are, as usual, correct, Oregon guy! I seldom use it, but get it right the first time about 50% of the time I do use it! But at least I know it exists, which many don't, and it can be very useful!