As a Verb or Adjective:
1. In education, to show what something is like, or to show that something is true, by quoting specific examples or statistics or possibly the drawing of maps, graphs, sketches etc. English = illustrate
Note:
1. The signer in the video is giving an Auslan explanation of the English term ILLUSTRATE as it is used in an educational or academic context, especially in instructions for assignments or for exam questions.