Link Plural Glossary Terms

Maybe this would make a good option for a future update, if CM is up for it. For now I am interested in finding which part of the plugin defines how to recognize terms in posts/pages.

Which code snippet needs to be edited in order to link plural usage of a term to the related glossary term?

For example, recognize the term “mortgages” and link to the glossary page item for “mortgage”.

If a term is found and ends in either ‘s’ or ‘es’, link to the term.

http://wordpress.org/extend/plugins/enhanced-tooltipglossary/