Fair enough John, it's very hard to judge the information flow level when you can't see the eyes rolling back in the heads :lol: I guess it is a case of some people wanting to learn about a subject and starting to use the information they gathered from else where and putting that learned skill into deciphering just what was said, others want it spelt out as they aren't at that level yet others get annoyed when you seem to be talking down to them because they already know that part. I'm always happy to expand anything I've posted if someone needs it explained a little clearer rather than their eyes staying rolled back in their heads, then a reread of the first part they didn't understand starts to make more sense.

T1 Terry