Manifesto 'will shed light' on Anders Behring Breivik
16 April 2012 Last updated at 17:35 BST
Anders Behring Breivik's defence lawyers, Geir Lippestad and Vibeke Hein Baera, say his manifesto video "will shed light on who he is".
Breivik, who carried out bomb and gun attacks in Norway last year which left 77 people dead, pleaded not guilty on the first day of his trial in Oslo.
He was seen weeping cry when his manifesto video was shown in court, but remained seemingly unmoved when the prosecution presented details of the attacks on Utoeya island.
They included a harrowing emergency telephone call from one of the youths there.
Gunshots and screaming could be heard in the background.