*-----shift all data according to the MCHINE ZERO indicated by the
* user in the POSTPR interaction
TRANS_MATX = 0 - X_MACH ;
TRANS_MATY = 0 - Y_MACH ;
TRANS_MATZ = 0 - Z_MACH ;
*-----shift the HOME according to the MCHINE ZERO indicated by the
* user in the POSTPR interaction
Xhome = X_HOME - X_MACH ;
Yhome = Y_HOME - Y_MACH ;
Zhome = Z_HOME - Z_MACH ;
*-----tool location is HOME
Xold = X_HOME ;
Yold = Y_HOME ;
Zold = Z_HOME ;