# XFN 1.1 relationships meta data profile

## Authors

- Tantek Çelik
- Matthew Mullenweg
- Eric Meyer

As described in HTML4 Meta data profiles.

rel

  HTML4 definition of the 'rel' attribute. Here are some additional values, each of which can be used or omitted in any combination (unless otherwise noted, and except where prohibited by law) and their meanings, symmetry, transitivity and inverse if any. Please see the XFN home page for more information about XFN.

  ### friendship (pick at most one)

  contact
    Someone you know how to get in touch with. Often symmetric.
  acquaintance
    Someone who you have exchanged greetings and not much (if any) more — maybe a short conversation or two. Often symmetric.
  friend
    Someone you are a friend to. A compatriot, buddy, home(boy|girl) that you know. Often symmetric.

  ### physical

  met
    Someone who you have actually met in person. Symmetric.

  ### professional

  co-worker
    Someone a person works with, or works at the same organization as. Symmetric. Usually transitive.
  colleague
    Someone in the same field of study/activity. Symmetric. Often transitive.

  ### geographical (pick at most one)

  co-resident
    Someone you share a street address with. Symmetric and transitive.
  neighbor
    Someone who lives nearby, perhaps only at an adjacent street address or doorway. Symmetric. Often transitive.

  ### family (pick at most one)

  child
    A person's genetic offspring, or someone that a person has adopted and takes care of. Inverse is parent.
  parent
    Inverse of child.
  sibling
    Someone a person shares a parent with. Symmetric. Usually transitive.
  spouse
    Someone you are married to. Symmetric. Not transitive.
  kin
    A relative, someone you consider part of your extended family. Symmetric and typically transitive.

  ### romantic

  muse
    Someone who brings you inspiration. No inverse.
  crush
    Someone you have a crush on. No inverse.
  date
    Someone you are dating. Symmetric. Not transitive.
  sweetheart
    Someone with whom you are intimate and at least somewhat committed, typically exclusively. Symmetric. Not transitive.

  ### identity

  me
    A link to yourself at a different URL. Exclusive of all other XFN values. Required symmetric. There is an implicit "me" relation from the contents of a directory to the directory itself.

## Acknowledgments

Please see our Thanks page for acknowledgments.

## Copyright

Copyright © 2003–2024 GMPG . Some rights reserved.