We need some things that contain nothing, but express something ThinkingOutLoud.DonaldNoyes.20131121
HorizontalSeparators are an example of a position-artifact of type horizontal , marking a division point in a collection of artifacts. Used in drop-down menus, WikiPages ( markdown ---- ), in the html page via the element <hr>.
Vertical Separators are an example of a position-artifact of type vertical , marking a division point in a collection of artifacts. Used mainly in bar-menus, WikiPage ( markdown | ) can be represented in html a various number of ways.
It can mark a boundary between groupings of menu components, document lines or paragraphs, end of content, and TheOtherThings.