Siemens SINUMERIK 802D sl Programming And Operating Manual page 221

Figure 10-9
Programming example
Mirroring in different coordinate axes with influence on an active tool radius compensation
and G2/G3:
...
N10 G17
N20 L10
N30 MIRROR X0
N40 L10
N50 MIRROR Y0
N60 L10
N70 AMIRROR X0
N80 L10
N90 MIRROR
...
Subroutine call - see Section "Subroutine technique "
Surface grinding
Programming and Operating Manual, 11/2012, 6FC5398-5CP10-3BA0
Example for mirroring with the tool position shown
; X/Y plane, Z standing vertically on it
; Programmed contour with G41
; Direction changed in X
; Mirrored contour
; Direction changed in Y
; Mirroring once more, but now in X
; Twice-mirrored contour
; Mirroring off
Programming
10.2 Positional data
221