beamer is a LATEX class for creating presentations that are held using a projector, but it can also be used
to create transparency slides. Preparing presentations with beamer is different from preparing them with
wysiwyg programs like OpenOffice.org Impress, Apple Keynote, KOffice KPresenter or Microsoft PowerPoint.
A beamer presentation is created like any other LATEX document: It has a preamble and a body, the body
contains \sections and \subsections, the different slides (called frames in beamer) are put in environments,
they are structured using itemize and enumerate environments, and so on. The obvious disadvantage of this
approach is that you have to know LATEX in order to use beamer. The advantage is that if you know LATEX,
you can use your knowledge of LATEX also when creating a presentation, not only when writing papers.
