I did also find at direct Honda reference at

http://www.hondanews.com/CatID2128%3...39095&mime=asc

"The Accord Hybrid's instrument panel incorporates an exclusive meter display that shows key operating indicators of the IMA system, including the state of the IMA battery charge, the level of IMA motor assist or charge, and a light to indicate Idle Stop mode. There is also an "ECO" light to indicate that the vehicle is achieving a high level of fuel economy and the VCM is operating in 3-cylinder mode. "

Dan