 or L, for replacing all barriers by <SPAN CLASS="MATH"><IMG
 STYLE=""
 SRC="img25.svg"
 ALT="$L = L_{in}$"></SPAN> barrier.

<P>
Of course, the <EM>simplest and fastest</EM> way to use the isocentrifugal
approximation is to put all spins and parities to <SPAN CLASS="MATH"><IMG
 STYLE=""
 SRC="img26.svg"
 ALT="$0^+$"></SPAN>, and all
transition multipoles to <SPAN CLASS="MATH"><IMG
 STYLE=""
 SRC="img27.svg"
 ALT="$k=0$"></SPAN>. The ISO variable is not needed then.

<P>
5ex1
NNU is the number of Gaussian i