What EXACTLY does q-range in logic pro do?

Question

I read the manual and it said that it is "A very musical quantization strategy that requires a certain amount of technical musical prowess. Q-Range is ideal for recordings that already have the right groove but are too hurried or laid back in places. It allows you to retain the original feel, but positions the rhythmic center precisely in the groove. A value of 0 means that every note or transient marker is quantized. If you enter negative Q-Range values, only notes or transient markers that fall outside the set range are moved to ideal quantization grid positions, whereas those closer to an ideal position remain unquantized. This moves the most poorly played notes or transient markers—those outside the range—to perfect timing positions on the quantization grid, or at least moves them toward these positions, depending on the Q-Strength setting." Can someone tell me the values that are meant by "range" and why when i set a value in both the negative and positive range, it seems to move notes at the same exact positions to different places?

Answer 1

I can get you a bit closer, no pun intended. 
The range # is in ticks.  Looky here:
The blue D is 74 ticks shy of the quarter note, the red Bflat on the 2.3 line is 20 ticks past the line.  I set the quantize grid to 1/8 because there are a couple notes on the grid there (the two C's).  Everything pops into strict quantize.  As the q-range is dragged down, when the value = the number of ticks that the original note is off the grid that note is no longer quantized.  So when I set the range to -21 the red note doesn't quantize any more.  As I continue, more of the notes fall off the grid and back to the location you see above.  The blue note stays on the grid until I get to -74.  Incidentally, if you go slow you will see that at certain values the display changes from -60 to 1/64, letting you know the musical equivalent of the tick values.
As you go positive, you will see that a value of 1 kicks everybody off the grid, and then teases them in as you dial in their tick values.  With positive values, however, there seems to be a 'relativity' to the relationships between the notes.  In my above pic, the orange Bflat that is roughly at the same time as the blue note is 40 ticks shy.  At a range of 10 it moves 2 ticks further away, and at a range of 20 it is 7 ticks closer.  At a range of 40 it is 15 ticks shy, and at 41 it is on the grid.  When I get to a range of 75, the blue note is on the grid and the orange note above it is 32 ticks past.  There seems to be some relationships that affect the quantization (like it averages all the quarter notes and splits the differences, then looks at notes that are roughly at the same time and splits the difference again) but the manual doesn't really explain how that works.
Make a region and by holding cntrl+shift you can move notes by the tick value.  Move some around and then play with the Q-range to see it in action.  In the piano roll you can go View>Event float and a floating window will appear that has the info you want to monitor.  Just select the note in the piano roll that you want to see the info for.  You can also open an event list to see the info on all the notes at once.