# Slot: rel


A link relation associated with a Link. The value MUST conform to both the [HTML5] and [RFC5988] "link relation" definitions.
In the [HTML5], any string not containing the "space" U+0020, "tab" (U+0009), "LF" (U+000A), "FF" (U+000C), "CR" (U+000D) or "," (U+002C) characters can be used as a valid link relation.

URI: [as:rel](http://www.w3.org/ns/activitystreams#rel)


## Domain and Range

None &#8594;  <sub>0..\*</sub> [String](types/String.md)

## Parents


## Children


## Used by

 * [Link](Link.md)
 * [Mention](Mention.md)

## Other properties

|  |  |  |
| --- | --- | --- |
| **Mappings:** | | as:rel |