|Editor: Add Horizontal Rule|
The purpose of this toolbar selection is to add a horizontal rule to your content. This html element is also referred to as the Thematic Break. The goal is to provide an opportunity for the reader to catch their mental breath and as a writing tool, it is used to indicate a change within a chapter or lengthy article, or to introduce a new character or location. The narrow width rule occupies 70% of the available space and the wide rule 100%.
Double horizontal line occupying 70% of the available space centered.