N10 G65 P0004 T10 S3000

...

O0004
M06 T#20
M03 S#19

-------------------
#100 = 100.0
#101 = 0
....
....
N20 IF (#101 == 19) THEN
M30
ELSE
GOTO 200
ENDIF
M00
....
....
N200 G00 X0.Y0.Z20.
Z5.
G01 Z-5. F100
X#100 F150
G00 Z20.
M00
#100 = #100+0.1
#101 = #101+1
GOTO 20

-------------------

IF (#251 == 1) THEN
M30
ELSE
GOTO 50
ENDIF
N50 ....

IF [#500 EQ 5] THEN M30;
IF [#500 EQ 5] THEN M05 G91 G28 Z0. M09 M30;

IF [#500 EQ 5] GOTO 100;
N100 M05
G91 G28 Z0.
M09
M30