PDF files - created using Adobe Acrobat - retain the formatting of the printed version of a document in an easy to download, single file. To view PDF files you need the Adobe Acrobat Reader, the latest version can be freely downloaded.
Viewers with visual difficulties may also find it useful to investigate services provided to improve the accessibility of Acrobat documents.
For Windows users who don't have Microsoft Word, the Word 97/2000 Viewer (Windows 95/98/NT) allows them to view MS Word files.
For Windows users who don't have Microsoft Excel, the Excel 97/2000 Viewer allows them to view Excel files.
For users who don't have Microsoft PowerPoint, the PowerPoint Viewer 97 PowerPoint 97, 2000 and 2002 Users allows them to view PowerPoint files.
A zip file is a compressed (or "zipped") store of either a single document or a collection of files, making it easy to group files together for transporting, copying and saving disk space.
You need a zip-compatible decompression program to "unzip" the files. WinZip is a commercial application available for a trial period after which a small fee is charged.
CSV (Comma Separated Values)
A CSV file is the simplest way in which tabular data can be saved for importing spreadsheet applications such as Excel or database applications such as Access. No special reader is required for this format.
RTF (Rich Text Format)
A RTF file is a format that lets you exchange text files between different word processors in different operating systems, for example, a document created in Word 97 on Windows 95, saved as an RTF file, can be opened using WordPerfect 6.0 on Windows.
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