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- completed work — including standards •
- obsolete specifications

This page summarizes the relationships among specifications, whether they are finished standards or drafts. Below, each title links to the most recent version of a document.

W3C Recommendations have been reviewed by W3C Members, by software developers, and by other W3C groups and interested parties, and are endorsed by the Director as Web Standards. Learn more about the W3C Recommendation Track.

Group Notes are *not* standards and do not
have the same level of W3C endorsement.

2006-01-31 |
## Arabic mathematical notation |

2003-11-10 |
## Bound Variables in MathML |

2003-11-10 |
## Structured Types in MathML 2.0 |

2003-11-10 |
## Units in MathML |

These specifications have either been superseded by others, or have been abandoned. They remain available for archival purposes, but are not intended to be used.