This tool displays the content of a Permanent File Store. It is invoked as shown;
pfsdump [options] storefile
where options are;
-v
  | verbose: dump contents
  |  -f 
  | generate a frame dump
  |  -r<n>
  | use nth previous store revision  |   -c 
  | format output for comparison (not for frame dumps)
  |  -q 
  | quiet: suppress logo  |  
  |