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
()