A listing of the 9 movement forms, the 52 moves and a few other aspects of the Nia Technique. The moves aren't numbered in this listing, but the names should be useful for searching for more info. Those moves with available online info are listed below.
Finger flicks are move #46 of the 52 basic moves of Nia. They can be particularly helpful for people who often make repetitive moves using their fingers. This and other hints are given here by Carlos Rosas, co-founder of the Nia Technique.
For more info about this and some of the other 51 moves of Nia, check out his book The Nia Technique.