.TAS6LDAXX15\ Reverse the sign of the x-coordinate of the vector inEOR#%10000000\ XX15STAXX15LDAXX15+1\ Then reverse the sign of the y-coordinateEOR#%10000000STAXX15+1LDAXX15+2\ And then the z-coordinate, so now the XX15 vector isEOR#%10000000\ pointing in the opposite directionSTAXX15+2RTS\ Return from the subroutine