Can take the value 0, 1, 2, or 3, for each 
. This
determines if the partial wave should be treated as low (1),
intermediate (2) (i.e. it will be downfolded), or high (3) (i.e. it will
be thrown away). If IDXDN=0;
then the program decides if the partial wave should
be treated as low, intermediate, or high.