Haynes Wiring Diagrams

["Tom Ambrose" <tambrose@tir.com>]

Well, here goes,

I have some very basic questions to ask about the Haynes wiring diagrams on
pages 246, 248, and 250:

Am I correct in thinking that the rectangles between wires are bullet
connectors?

What do the circles with an X in them mean?

On page 248, what does the left-shaded half circle signify?

And finally for curiosity's sake, on page 250 for RHD Spits, there are
bottom-shaded and cross-shaded circles. What do these symbols represent?

Thanks,

Tom