What is a single spoke or a sub-header of a spoke

A spoke in brainstorming techniques, with the mind mapping. It's is just like a spoke on a wheel. When asking for a single spoke it means, one of the lines that is off the main subject of the map. As in, the center of the paper will have a circle, inside that circle you would put your main topic, mine would be "Employee Privacy Rights in the Workplace", now you draw 4 or 5 lines outwards all on different sides of that circle. Those lines are spokes.

I haven't figured out the sub-headers yet, but I am going to assume that those are the circles that you draw after you make the lines.