%
O6033(PREPROCESSING) 
G10.9X1
IF[#20EQ0]GOTO1

T[#20] 
G361B[-#2]D0 
G43H[#11]
M69

N1
G00G54G98G18M45

IF[#19EQ0]GOTO2
G97S[#19]M13 
M08

N2
G00Z[#503] 
#560=1 
 
M99
 
%