What is a non linear presentation

A linear presentation is typically in order from beginning to end, meaning you have to go through each slide to go to the center of the presentation. Where as a Dynamic or non-linear presentation allows you to go to whatever slide you want in whatever order. Its perfect for crowds that have a lot of questions and you can go to the slide that has the answers on it. If that makes anysense ... there is certain software out there that allows you to do just this.