If *LEVEL* is at least 7, "if" statements will be translated into
 equivalent expressions using "&&", "?:" and "do {}"; for instance

     print 'hi' if $nice;
     if ($nice) {
         print 'hi';
     }
     if ($nice) {
         print 'hi';
     } else {
         print 'bye';
     }

 turns into

     $nice and print 'hi';
     $nice and do { print 'hi' };
     $nice ? do { print 'hi' } : do { print 'bye' };