EpicEd is a markdown field with the default widjet using EpicEditor.js http://epiceditor.com/
This plugin is made to keep a much as possible the possibilities to overide EpicEditor.js configurations the only settings you'll not be able to edit are 'container' and 'textarea' since they are rewriten by the wideget and are needed to save the data to the database.
.. toctree:: :maxdepth: 2 about configurations widgetusage