ITEA Success story 
UsiXML
Prof. Jean VANDERDONCKT (UCLouvain/LouRIM) has been involved in this project for almost 4 years.
This led to a recommandation for the W3C :
A meta-language for user interfaces in multiple contexts of use
The international landscape is quite diverse in terms of interactive software systems as they should be used in a wide spectrum of contexts of use. Each context of use covers various types of users along with their interactive tasks, using potentially several computing platforms or devices in multiple physical, organisational and psychological environments and locations. In addition, practices for developing user interfaces of these interactive software systems are even more heterogeneous. Evolving in so many diverse contexts of use is particularly challenging when the same system should be deployed for several targets. In theory, a single version of the software should be produced so that it is adapted to each context of use. In practice, this is simply impossible to do due to lack of resources and knowledge.
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bibliographic reference: A. Coyette, S. Faulkner, M. Kolp, Q. Limbourg, J. Vanderdonckt, SketchiXML: towards a multi-agent design tool for sketching user interfaces based on USIXML (https://dl.acm.org/citation.cfm?id=1045461)