What does a el value really mean?
The rel values in HTML follow a consistent pattern which at a minimum implies a deliberate design. rel describes the relationship of a hyperlink in terms of what the destination (href) is, to the source, or from the source’s perspective. rel=”stylesheet” is perhaps the easiest example to understand in this manner, because it is saying that this resource over there (indicated with the href) is a “stylesheet” for the current document. Similarly, rel=”help” link states that the resource indicated by the href is “help” (e.g. a help file or FAQ) for the current document. All the rest of the values defined in HTML4 also follow this pattern of being a noun which labels the resource indicated by the href, from the perspective of the current document.
