[blkbear]

As per the title of my message - there is no such thing as a dumb question. If you don't know, or understand, or perhaps there has been a question raised about your understanding of a subject. You need to have an answer to clear up your question. Maybe others don't ask because they are too shy to ask or appear foolish or perhaps they thought they knew the answer.
Whatever the reason - it doesn't matter.
From the discussion thread that your posting is starting to generate, more people will end up understanding clicker than before you asked - me included.

Brian