ave functions.

<P>
5ex1
Non-local kernels <!-- MATH
 $K_{fi}'(R_{f},D_{fi})$
 -->
<SPAN CLASS="MATH"><IMG
 STYLE=""
 SRC="img6.svg"
 ALT="$K_{fi}'(R_{f},D_{fi})$"></SPAN> calculated at <SPAN CLASS="MATH"><IMG
 STYLE=""
 SRC="img13.svg"
 ALT="$R_f$"></SPAN> intervals of RINTP,
and for a non-local (<SPAN CLASS="MATH"><IMG
 STYLE=""
 SRC="img5.svg"
 ALT="$D_{fi}$"></SPAN>) range of RNL centred at CENTRE in steps of HNL.
RMATCH and RINTP are rounded to multiples of HCM, and HNL is rounded either to
a multiple 