Starting from version 4.6.3 the very special functionality is added to the plugin. This functionality involves using NOV matrix to calculate differently than normal. Normally, during the evaluation of NOV matrix only one value will be picked and it is based on 1st and 2nd variables, of course. This new mode of calculation of NOV value sums values of each number in the range of numbers based on the rates picked from the matrix connected to this NOV. The great example of this functionality is so called game ranks booster calculators. Let's say you offer rank boosting for DOTA game (nice game btw 👍), let's say the current player's rank is 100 and he/she wants it to be 4005. In you calculator each rank has its own price, like from 1 to 2000 each rank costs 0.045, but from 2001 to 3000 it costs 0.057 each and so on. Now, you can create a very simple matrix with such ranges and the final price for our example will be calculated like that: (2000 - 1)*0.045+(3000-2000)*0.057.... = $200 Briefly, this is the idea behind this new way/mode of evaluation of NOV value.