Deleting Many Broken Bookmarks

Q.  Bookdog's Verify just found 462 Broken Bookmarks.  I looked at the first 10, deleted them, but this is going to take a long time and I don't want to consider each one.  How can I just delete all of them?  Answer.  After verifying,

    1.  Click menu Find > Find or type ⌘F.  
    2.  Check the relevant browser/document icon at the top.
    3.  Click the "More" button.
    4.  Select "Verify Code" from the search parameter popup.
    5.  Select the operator "=", ">" or "<" and a desired number.
    6.  Experiment with the operators and numbers to learn what you've got.
    7.  After you've got a list of bookmarks you want to delete,
    8.  Click in the list, ⌘A to Select All.
    9.  Right-click or ctrl-click to bring up the contextual menu
   10. Click Delete.

It looks like this example.