Analyzer take two html files and in first file taking element with id=make-everything-ok-button as original.
To run analyzer execute following line:
java -cp agileengine.jar <input_origin_file_path> <input_other_sample_file_path>
And in the output you will see XML path to the target element or message about no target file found.
As optional value you can provide id of your element as 3rd parameter:
java -cp agileengine.jar <input_origin_file_path> <input_other_sample_file_path> <your_element_id>
Further improvement might include combined selector with classes and attributes, with attributes values (e.g.[rel=next]), different combination of attributes and classes.