te and display the 3<sup>rd</sup>, 5<sup>th</sup> and
7<sup>th</sup> order spherical aberrations, issue the command:</p>

<p><strong>SA357 ALL</strong></p>

<p>It must be remembered that, except for third order aberrations, all
higher order aberrations are made up of an intrinsic surface dependent
part and a transferred part due to lower order aberrations at
preceding surfaces. The program not only calculates and displays the
sum of the intrinsic and the transferred part of 5th and 7th order
aberration valu