scott.clark,
I have attached some screen captures that show you how to automatically insert the symbols that Archie showed.
The second shot shows what the input box looks like and the cursor is in between the bracketed symbols.
The input window will not show the scrollable bars, but you can "Preview" at the bottom right to see what it will look like when posted.
This was confusing to me for a while as well and even now I have to cursor over the symbols at the top and look for the tooltip to show the one I am looking for.
The final result is really nice though.
Doug Lyons