* Confluence of context-sensitive parallel reduction closed: 2011 September 21
* Confluence of context-free parallel reduction closed: 2011 September 6
* Specification started: 2011 April 17
* Confluence of context-sensitive parallel reduction closed: 2011 September 21
* Confluence of context-free parallel reduction closed: 2011 September 6
* Specification started: 2011 April 17