The document is based on research collated during this summer's Tri-Nations matches by the three-man national squad analysis department headed up by rugby expert Rhys Long.

The dossier also includes existing statistics on the use of ELVs in Southern Hemisphere rugby and analysis of Currie Cup and Super 14 matches.

Three laws are identified by the report as being the most influential and Long's team have consulted Gatland before making recommendations as to how players and coaches could and should deal with a host of different scenarios created by their implementation.

The three laws which are expected to be most influential by Long and his team are those affecting kicking out of the 22, numbers in the lineout and the new five metre off-side line at the scrum, but, although all Welsh coaches are invited to read the report, its key recommendations will carry a 'For Your Eyes Only' heading.

"The real nitty gritty of our findings are for Welsh coaching eyes only with specific recommendations about how to cope with particular aspects of opposition play and suggestions about possible ways to attack in varying scenarios," said Long.

"With any statistics your conclusions are only as good as the evidence you have before you and, by definition, the more we play under the ELVs the better the evidence will be so our conclusions and resultant advice will improve.”