My english being what it is, I can only hope you understand the terms I have selected to use in the program. And because you probably don't, I will explain a little. If you have better suggestions for the terms, please send them to me.
A test means a whole test session, during which you use the same bow settings and the same arrows. If you change the bow setup, for example change the tiller or brace height, you should record the settings and collect the data under a different test.
An end means a set of arrows shot at a time. You can record the arrows as one end, even though you shoot them in smaller groups. I do not recommend this, however. When you go fetch the arrows, come back and take the stance again, there tend to be small changes in some area or another, which cause changes in the grouping. If you are a top archer, don't listen to this; it applies only to us below 1300 FITA shooters. Anyway, the best results are achieved by shooting as many arrows in one end as you can shoot cleanly (I think). Speaking of which, don't do arrow testing, if you are not in top condition! You won't get significant and reliable differences between the arrows.
A hit is where the arrow hits the target.
A bow type means the bow as it is. If you change anything in it, you should create a new bow type, because as you should know by now, everything affects on everything in archery.
An arrow type is a name for a certain kind of an arrow. If you change the length, the point or anything like that, the arrow behaves differently.
A cell in the grid or matrix has x and y coordinates. There are cells outside the grid also. You can give the hit negative coordinates, for example. These you have to extrapolate or estimate, because there are no lines on the target to help you.
A sector is an area within a cell. Especially when the arrow hits near the edge of the cell, you should record the sector as well. Zero is the default.
Normalization or centralization means shifting the hits of each end, each test or each arrow according to their common center. The average of the hits is calculated, and this offset to the center of target is subtracted from each hit. This feature is on and off switchable: if you don't like/need it, don't use it.
Filtering is a feature to sort out the worst shots. If the distance of the hit and the center of the end exceeds the standard deviation of the end multiplied with a factor, the hit is ignored when calculating the standard deviations and distances. Cryptically expressed?