Explain \”documentary theatre\” is about, what would you say?

Anna Devere Smith has been credited with creating a new form of theater – documentary theatre. If someone asked you what \”documentary theatre\” is about, what would you say? Use examples from Twilight: LA to support your definition. Also, discuss why it is important. Use this link for example:http://www.pbs.org/wnet/gperf/twilight-los-angeles-full-episode/3972/