title: Set encoding for Apache POI excel workbook
body: <p>I'm using the Apache POI library to create, and fill an excel sheet in C# .NET.</p>
  
  <p>The problem I'm faced with however, is that the data I populate my workbook with, contains some special characters (e.g. é, á, í, etc). I have been told that I need to create the worksheet with UTF-8 encoding in order for our partners to be able to auto ingest these excel files.</p>
  
  <p>Does anyone who has experience using the POI library know how to set this value?</p>