If you are a trial lawyer, you will find this article particularly useful. During presentation (to a jury, mediator, etc.), it is often helpful to emphasize one particular portion of a document. One demonstrative way to do this is through the use of a "callout."
Apple’s Keynote can be used to easily create elegant callouts, as shown in a recent post at The Trial Technologist’s View blog. This post contains an easy to follow video tutorial that shows just how easy it is to create callouts with Keynote. I urge you to check it out and determine if you can use this in your practice.