A system for generating surface data defining a position and location of an object is described. In response, an encryption key may be sent to the sender of the encryption key request. The compiler also identifies register and memory references in the EDS and inserts a set of instructions into the EDS. The first finger or node 133 has means 139 to retain and rotate the free end of the line after it has passed around the other two fingers or nodes so as to be able to twist the free end 164 of the line about both a first primary portion 137 of the line and a second return portion of the line 163 to form the knot. The system and method may further provide for adjusting the output signal to accommodate measured intake air temperature, andor measured atmospheric pressure in order to maintain a constant, good thermal efficiency regardless of air temperature and altitude at the system’s installation location.