3.30. FormAction

Allows set up of a form action (like the standard ones return, submit, refresh, etc.). It requires a Perl subroutine as a target:

   FormAction foo <<EOR
   sub {
       $CGI->{mv_nextpage} = 'bar';

If it returns a true (non-zero, non-empty) value, Interchange will display the page defined in $CGI->{mv_nextpage}. Otherwise, Interchange will not display any page. The default Interchange actions can be overridden if desired. There is also a global version of this directive, which is overridden if a catalog-specific action exists.