HEIDENHAIN iTNC 530 User Manual page 268

N90 G98 L1 *
N100 G91 Z-4 *
N110 G11 G41 G90 R+45 H+180 F250 *
N120 G26 R5 *
N130 H+120 *
N140 H+60 *
N150 H+0 *
N160 H-60 *
N170 H-120 *
N180 H+180 *
N190 G27 R5 F500 *
N200 G40 R+60 H+180 F1000 *
N210 L1.4 *
N220 G00 Z+250 M2 *
N99999999 %PGMREP G71 *
268
Set label for program section repeat
Infeed depth in incremental values (in space)
First contour point
Contour approach
Contour departure
Retract tool
Return jump to label 1; section is repeated a total of 4 times
Retract tool, end program
Programming: Subprograms and Program Section Repeats