what ones are you looking for?
he uses a play within a play to present a diadactic experience, half curtain, gestus, placards, technology, alienation effect, band on stage, narrator, bright white lights to keep the audience objective...just look through the play to find some examples..
did you ever perform the play as an assessment? because they also look for techniques you put into your play you did.
like we had only 4 people in our group but there were 6 characters in the scene so we used a signifying peice of costuming to show we were that character, and changed that signifying peice before the audience to say our line as the other character.
its confusing but once you get the gist then its easy i think..i liked brecht heaps coz its just so weird haha