Name,Description,Reference
RAP,"Using the closest Random Access Point prior to or at the
      requested start position.",[RFC7826]
CoRAP,"Conditional Random Access Point is like RAP, but only if
      the RAP is closer prior to the requested start position than
      current pause point.",[RFC7826]
First-Prior,"The first-prior policy will start delivery with the
      media unit that has a playout time first prior to the requested
      start position.",[RFC7826]
Next,The next media units after the provided start position.,[RFC7826]