title: What is the difference between DirectorySeparatorChar and AltDirectorySeparatorChar
body: <p>System.io.DirectorySeparatorChar returns the character "\" while System.io.AltDirectorySeparatorChar returns "/" </p>
  
  <p>to be more specific what is the job of System.Io.AltDirectorySeparatorChar and when we use it?</p>