An important skill that a trial attorney using a Mac needs to master is the ability to make callouts quickly. A callout is an blowup view of a section of a document, usually displayed over the original document. Callouts allow the viewers (jurors) to see and read a portion of a document that the attorney selects.
Keynote has the built-in ability to make callouts quickly using the copy and mask functions. Watch this Two Minute Tech Tip for Trial Attorneys video to see how it is done.