5.5 Adding Text to a Multimedia Application
115
Two different forms of software are required for the creation and use of PDF docu-
ments. The Acrobat program, offered for sale by Adobe, is used to translate documents
to the PDF format, add hypermedia features such as sound and interactivity, and imple-
ment options such as password protection and digital signatures. The translation process
produces a file that can contain text in editable format, fonts from the original document,
vector graphics, and bitmapped graphics. The locations of these elements on a page are
encoded and compression is applied to graphics. The result is a file that preserves the
original formatting of all page elements and also supports text searches and editing. PDF