%550 (TOUR echiquier)
N1 E60000=-58746
N2 E62000=-274649
N3 E62001=+100000
N10 G54 G71 G90
N20 G80 G40
N25 G97 S1000
N30 G0 G52 X0 Z0
N40 T1 D1 M6 (pcln pour mise piece en butee)
N50 G0 X0 Z2
N60 M0
N70 G0 G52 X0 Z0
N80 T2 D2 M6 (contournage ebauche SVJBL)
N81 G0 X35 Z20 M4 M8
N82 G96 S200 
N83 G95 F0.1
N90 G63 N120 N280 X30 Z5 P0.8 EZ-40 EU0 EB-134 EC-90 ER0.2 Q1 EF0.03
N100 G0 G52 X0 Z0 G97 S1000
N110 T2 D20 M6 (correcteur de finition)
N120 G42 G0 X-0.5 Z5 M4 M8
N130 G96 S250
N140 G01 X0 Z0 F0.03
N150 X15.38 
N160 G3 X17.38 Z-1.1 R1
N170 G1 X16.08 Z-7.64
N180 G3 X15.5 Z-8.25 R1
N190 G1 X9.64 Z-11.17 
N200 G2 X9.06 Z-11.96 R1
N210 G1 X12 Z-30.5
N220 G1 X13.4
N230 G2 X16.84 Z-32.64 R15
N240 G1 X17.4 Z-32.93
N250 G3 X18 Z-33.64 R1
N260 G1 Z-36
N270 X20
N280 Z-40
N315 G0 X40
N320 G0 G52 X0 Z0 G97 S1000
N325 G40 M5
N3250 T4 D4 M6
N3251 G97 S2000 M3
N3252 G0 X0 Z5 M8
N3253 G81 Z-4 F0.08
N3254 G80 G0 G52 X0 Z0 M5 M9
N3255 T7 D7 M6
N3256 S2000 M3
N3257 G0 X0 Z5 M8
N3258 G83 Z-5 P5 Q2 F0.1
N3259 G80 G0 G52 X0 Z0 M5
N3260 T5 D5 M6
N3261 S2000 M3
N3262 G0 X-18 Z5 M8
N3263 G1 Z3.08 F0.05
N3264 X-10 Z-3.848
N3265 G0 Z5 
N3267 X-12.2
N3268 G1 Z-5 
N3269 X-10
N3270 G0 Z5
N3271 G0 G52 X0 Z0 M5
N326 T3 D3 M6
N327 G0 X28 Z-34.5 M8 M3
N328 G96 S100
N329 G1 X18 Z-39.5 F0.05
N3290 X0
N3291 G0 X28
N3292 G97 S1000
N3293 G0 G52 X0 Z0 M5 M9
N330 M2