There was a proposed change to the linkOnTapHandler callback method to provide additional parameters so more information about the link that was passed could be used by the callback method. A method does currently exist for additional information to be passed to the linkOnTapHandler callback method by using URL parameters in the href of the link tag in the Markdown document. The linlinkOnTapHandler callback method can use the dart:core Uri class to parse and query for the parameters in the URL being passed. Adding information to the README.md on how to pass URL parameters to the linkOnTapHandler callback method and query them could be useful to users of the flutter_markdown package. Adding a demo to the example app of passing URL parameters could also be useful.