You can see a list of available recordings and chapters on the Playlist Bar.
Holding down on a recording or chapter will display the context menu. Select [Delete] from the menu.
You can delete a recording or chapter by swiping left on it and then tapping the revealed Delete button.
Overview
Basic Editing
Effective Editing
Spreadsheet
Calendar
Voice Recording
Managing Pages
Organizing Notes
Using Tags
Sharing Notes
Customization