NA code in Okuma program

[emsee]

I don't understand code NA in Okuma code program
EX:

N5G0G40G90G95M146M42M5
N10G50S1600
()
NAT10 [WHAT NA MEANS?]
(Live tooling)
("F" S/C Drill [.257"], 3" long)
()
N15 T1010
M110
N20 X.625 Z.2 C0 M8 M13 SB=1500 T1010
N25 G181 X.625 Z-1.4 C0 Q3 F.005
G180
N30 G0Z.3M12 M9
N35 X30 Z30 M1
()

[Superman]

NA is similar to N ( sequence numbering )

NA is used to quickly search for the start before an operation
N is most times not needed, except for cycles

ie ReStart NAT25 <WRITE>
would restart your program on the 1st occurance of Tool # 25

[budgieW]

It is a sequence number . The breakdown is

N = Sequence number
A = Turret A
T = Tool number