For a few further examples of this module's usage, the following nodes may be helpful:
HTML Token Diff: the code presented in this node uses a special key generating function that allows it to usefully "diff" HTML token streams from two instances of HTML::TokeParser
Re: Yet another Algorithm::Diff question: the code in this node implements a "patch" algorithm, taking the change array from the Algorithm::Diff's diff and applying the changes to the original sequence to yield the revision