Definition

Knowing how a single level bullet is defined will help to explain some of the odd things you might see or experience when working with the (Format > Bullets and Numbering) dialog box.
The first thing to understand is that Word stores single level bullet formats as List Templates.
Every document contains a collection of List Templates.
All these List Templates are stored in the hidden default section break attached to the last paragraph in your document.
The (Format > Bullets and Numbering) dialog box will only display the seven most recently used list templates.

Important

List templates are created (and managed) automatically for you behind the scenes.
Every document can contain a different set of list templates.