I was thinking about notation again, as good notation makes it easier to express things. How about the following?
- d = a downstroke that is trapped at the end
- u = an upstroke that is trapped at the end
- D = a downstroke that is escaped/free at the end
- U = an upstroke that is escaped/free at the end
So,
- DBX looks like this: DUDUDUD, with no lower case letters.
- Sweeping is a bunch of lower case letters in a row, e.g., dddd, or uuuu.
- USX looks roughly like dUdUdU.
- DSX looks roughly like DuDuDu.
Not just that, I can explain how I would play a scale starting with 2 notes on the first string, 3 on the second, and 3 on the third: dU duD udu. This is neat, because I do some thing that are strange, but it’s easy to notate, a good sign.
I think one can express everything with these four letters? (I’m not sure.) And there is an interesting rule of thumb:
- For alternate picking: the last note on a string has to be D or U.

