ARIS was the Market Design Tool used before the conversion of the Market Design to Word and Visio format and is displayed on the RMDS website as PDF files.
ARIS will continue to remain available for a limited time to allow Market Participants familiarise themselves with the new format.
However, the version of the Market Design that is available using ARIS has been frozen at V10.2. Market Participants will need to refer the V10.5 to be sure that the item they are referring to is the current, most up to date version.
ARIS V10.2 can be found by clicking here.
The user guide for ARIS is also still available and can be viewed here.