15-10-2012, 03:51 PM
A Word Processor
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A word processor (more formally known as document preparation system) is a computer application used for the production (including composition, editing, formatting, and possibly printing) of any sort of printable material.
Word processing typically implies the presence of text manipulation functions that extend beyond a basic ability to enter and change text, such as automatic generation of:
• batch mailings using a form letter template and an address database (also called mail merging);
• indices of keywords and their page numbers;
• tables of contents with section titles and their page numbers;
• tables of figures with caption titles and their page numbers;
• cross-referencing with section or page numbers;
• footnote numbering;
• new versions of a document using variables (e.g. model numbers, product names, etc.)
Other word processing functions include "spell checking" (actually checks against wordlists), "grammar checking" (checks for what seem to be simple grammar errors), and a "thesaurus" function (finds words with similar or opposite meanings). Other common features include collaborative editing, comments and annotations, support for images and diagrams and internal cross-referencing.
PowerPoint presentations consist of a number of individual pages or "slides". The "slide" analogy is a reference to the slide projector, a device that can be seen as obsolete, within the context of widespread use of PowerPoint and other presentation software. Slides may contain text, graphics, movies, and other objects, which may be arranged freely on the slide. PowerPoint, however, facilitates the use of a consistent style in a presentation using a template or "Slide Master".