t>POT</tt> requires data from an additional file, make sure you set the flag 
<a href=readpt.html>READPT</a> to be <tt>.true.</tt>  Data files should be placed in the directory <tt>bin/progs/potdata</tt>.
<p>
To <a href=linking.html>link</a> an executable program, you need to specify the name
of a particular <tt>POT</tt> subroutine.  Specifically, if you wish to link with the potential
subroutine <tt>src/pot/pot_toto.f</tt> you would need to use the <a href=linking.html>link</a> command
<tt><ul>
makehib tot