Hi,
I don't speak about numbers in attributes.
I mean the "Number Rows" option in grids.
This image hope is more relevant than the previous one:

I want to use these numbers in documents. I tried to use autoincrement option, but if I delete "iBook Air" which is position 3....than in document i will have listed positions: 1,2,4,5 (missing 3)....I would like if I delete position 3.....to recalculate the row numbers and "iPOD" will become 3, "iPhone6" will become position 4..
I hope I made my self understood enough..
thank you