I believe the button he is referring to is what is really the gramophone button. I don't use TM, but I believe Duci added a pull down conversion chart to the gramophone display (simialr to the pull down shipping lanes charts). It's possible, at some screen resolutions, that the edge of the pull down display doesn't appear on screen. If it does appear, it will be in the upper left hand corner and you can grab it and pull it down (hecnce the name) to look at it.
As for the "turbo layer", I surely wish there was one. I could use it at times:rotfl

this comment was made sarcastically, but in good humor. Oooooooh, speaking of good humor, here comes the ice cream truck, seeeeeeeeeeee ya