Four Immeasurables, Equanimity Part 3

To follow the fourth immeasurable line, next is dang which is a binding particle, so it binds the earlier nye ring chags sdang -- attachment and aversions towards close and far -- with the next part.

We had bral ba before -- to be free from. Notice the ending ba'i, that's again the genitive particle, and read this from the right to left. btang snyoms is equanimity. So this is connected, equanimity of being free from aversions towards close and far.