<P> Similar to programming extensions for an operating system or web browser, "add ons" or plugins for presentation programs can be used to enhance their capabilities . For example, it would be useful to export a PowerPoint presentation as a Flash animation or PDF document . This would make delivery through removable media or sharing over the Internet easier . Since PDF files are designed to be shared regardless of platform and most web browsers already have the plugin to view Flash files, these formats would allow presentations to be more widely accessible . </P> <P> Certain presentation programs also offer an interactive integrated hardware element designed to engage an audience (e.g. audience response systems, second screen applications) or facilitate presentations across different geographical locations through the internet (e.g. web conferencing). Other integrated hardware devices ease the job of a live presenter such as laser pointers and interactive whiteboards . </P>

Which of the following is an example of presentation software