The following plugins and viewers are free of charge and provide software that enables people to view some of the file types posted on https://nidilrr.rti.org, including PDF, DOC, XLS, and MP4 files.

• For .pdf file types, use Adobe Reader
• For .xls and .xlsx file types, use Microsoft Excel Viewer
• For .doc, .docx, and .wpd file types, use Microsoft Word Viewer
• For .mp4 file types, use Microsoft Windows Media Player
• For .pptx file types, use Microsoft PowerPoint Viewer 2007