1) The document discusses application software and word processing. It defines the logical and physical structure of documents and how word processors allow editing of the logical structure while formatting controls the physical presentation.
2) Examples of application software types are given including word processing, graphics, presentations, databases and office suites. Microsoft Office is presented as a popular integrated office suite.
3) Word processing allows easy editing and formatting of documents while separating the logical content from the physical layout that can vary across devices. Formatting tools in Word help control the physical presentation.