As an example, if I call the Detail command the options I’m given all have automatically underlined letters in each word, I believe this is called an Access Key.
Is there a way to set the letter that is being used? Quite often I find i’d like to use different letters.
No, there isn’t a way of setting the “hot” key for command line options. Rhino assigns these automatically. Sometime you need to play with the order, and even words, get what you want.