28.-+Presentation+Programs

A presentation program (also called a presentation graphics program) is a computer software package used to display information, normally in the form of a slide show. It typically includes three major functions: an editor that allows text to be inserted and formatted, a method for inserting and manipulating graphic images and a slide-show system to display the content. Is supposed to help both: the speaker with an easier access to his ideas and the participants with visual information which complements the talk. Text, graphics, movies, and other objects are positioned on individual pages or "slides" or "foils". The "slide" analogy is a reference to the slide projector, a device that has become somewhat obsolete due to the use of presentation software. Slides can be printed, or (more usually) displayed on-screen and navigated through at the command of the presenter. Transitions between slides can be animated in a variety of ways, as can the emergence of elements on a slide itself. Typically a presentation has many constraints and the most important being the limited time to present consistent information.

Notable examples:
 * Microsoft PowerPoint
 * Corel Presentations
 * Google Docs
 * Harvard Graphics (obsolete)
 * IBM Lotus Freelance Graphics (obsolete)
 * Kingsoft Presentation
 * Libre Office Impress (open source)
 * OpenOffice.org Impress (open source)
 * SlideRocket
 * Prezi
 * Apple Keynote