The Thinning of the bookmap is a good indication of moves to come ...

[marcovth]

In blue, this is basically the opposite of your bookmap view: The brighter the blues the thinner the levels.
So it's not only a thickening on one side or the other that's important for a move, but also the levels thinning.

What bookmap needs is a U-shape grading option, where the middle 40-60% is the darkest. From 40 to 0% it gets brighter blue.
And from 60 to 100%+++ the gradient gets more red/green ... to show both a thinning and a thickening in the bookmap.

https://www.screencast.com/t/ULwFcjYI79

[SuperDriveGuy]

Hi Marcovth,
  Good point.

   Please check the screencast, its not accessible.
Thanks,

SDG

[marcovth]

Here is a new example ...

https://www.screencast.com/t/St1XBDf4

[malaypower]

really good