Because the electron labels must match exactly (UPPERCASE
and lowercase as well as blank fields) it may be necessary to change
the electron label.
This routine lists the labels of all electrons
found in wfn.inp and selectively allows the user to change the
labels before the radial function is written to a file.
After each label is printed, the user may respond in three ways:
d
Radial function is not copied (deleted)
(Blank)
No change in the label, radial function copied to wfn.out
AAA
Change label to AAA, then copy
to wfn.out
This routine may also be used to eliminate some radial functions from
the file. All .w files can always be concatenated.