>>>>> "Michael" == Michael Kay <mike@xxxxxxxxxxxx> writes:

    Michael> Personally, I can never remember what all the symbols on
    Michael> the diagrams actually mean:

Tool-tips give the game away here - what's the point of graphical
symbols, when you need a textual reminder as to what they mean.

    Michael> other people seem to like them so it must just be me.

No - you are not alone!
-- 
Colin Paul Adams
Preston Lancashire